Answer: Option D. -> with
The most appropriate preposition to use in the given sentence is "with."
Explanation:
A preposition is a word that links a noun, pronoun, or noun phrase to some other part of the sentence. It shows the relationship between the noun and the other words in the sentence. In this sentence, we need a preposition to link "obsessed" with "such ideas as you are."
Let's examine each option to see which one works best:
A. "In" is incorrect because it doesn't accurately convey the relationship between "obsessed" and "such ideas." "In" is used to indicate location or position, and it doesn't fit in this context.
B. "On" is also incorrect because it doesn't accurately convey the relationship between "obsessed" and "such ideas." "On" is used to indicate a surface or a topic, but it doesn't fit in this context.
C. "For" is incorrect because it doesn't accurately convey the relationship between "obsessed" and "such ideas." "For" is used to indicate purpose, but it doesn't fit in this context.
D. "With" is the correct preposition to use because it accurately conveys the relationship between "obsessed" and "such ideas." "With" is used to indicate association or attachment, and it fits perfectly in this context. The speaker is not attached to or associated with the ideas in the same way as the listener.
E. "None of these" is not the correct answer since option D, "with," is the correct preposition to use in this context.
In conclusion, the correct preposition to use in the given sentence is "with." The sentence should read: "I am not obsessed with such ideas as you are."

Answer: Option D. -> into

Answer: Option C. -> on

Answer: Option D. -> by

Answer: Option B. -> for
The most appropriate preposition in this sentence is "for". The sentence "The insects are a great nuisance for us" indicates that the insects are causing trouble or annoyance for us.
Explanation:
To determine the correct preposition, it is important to understand the meaning and context of the sentence. In this case, the sentence describes insects that are causing a nuisance for us. The preposition "for" is the most appropriate choice because it is used to indicate the purpose or reason for something, or the person or thing that something is intended to benefit or harm.
Here are some relevant definitions and examples of the preposition "for":

• "For" is used to indicate the purpose or reason for something. Example: "I bought this book for my sister's birthday."
• "For" is used to indicate the person or thing that something is intended to benefit or harm. Example: "He opened the door for the old woman."
• "For" can also be used to indicate a period of time. Example: "I will be on vacation for two weeks."

Other prepositions such as "with", "to", "at", and "upon" do not convey the same meaning as "for" in this context.

• "With" is used to indicate association or accompaniment. Example: "I went to the party with my friend."
• "To" is used to indicate direction or destination. Example: "I am going to the store."
• "At" is used to indicate a specific location or time. Example: "I will meet you at the park at 3pm."
• "Upon" is used to indicate a moment of time, or a specific event or situation. Example: "Upon hearing the news, she burst into tears."

In summary, the correct preposition in this sentence is "for", as it indicates the purpose or reason for the insects being a nuisance for us.

Answer: Option A. -> after

Answer: Option A. -> of
In the given sentence, "dispensed with" means to do away with or get rid of something, and "services" refer to the work or duties performed by the clerk. The sentence means that "he got rid of the work or duties performed by his dishonest clerk."
The preposition "of" is used to show possession, origin, or association. In this case, "of" is used to show possession of the services by the clerk. Therefore, the correct preposition to use is "of".
Let's consider the other options and see why they are incorrect:

• B. "by" - This preposition is used to indicate the agent of an action or the means of achieving something. It does not fit the context of the sentence because the clerk is not the agent of the action; rather, he is the object of the action.
• C. "for" - This preposition is used to indicate the purpose of an action or the person or thing that benefits from an action. It does not fit the context of the sentence because the clerk is not the person who benefits from the action; rather, he is the person who is being dispensed with.
• D. "to" - This preposition is used to indicate the recipient of an action. It does not fit the context of the sentence because the clerk is not the recipient of the action; rather, he is the person who is being dispensed with.
• E. "from" - This preposition is used to indicate the source or origin of something. It does not fit the context of the sentence because the clerk is not the source or origin of the services; rather, he is the person who performs them.

In summary, the correct preposition to use in the given sentence is "of" because it shows the possession of the services by the clerk.
Formula/Definition:

• Prepositions are words that show the relationship between a noun or pronoun and other words in a sentence.
• "Of" is a preposition that indicates possession or association between two nouns or pronouns.
• "Dispense with" means to do away with or get rid of something or someone.

Answer: Option C. -> to

Answer: Option D. -> on

Answer: Option D. -> up