The picnic for boys are situated by the hill some two hours away from the city.

Correct sentence: The picnic for boys is situated by the hill some two hours away from the city.

The matching of singular verbs with singular subjects and plural verbs with plural subjects is the act of ensuring subject-verb agreement. The verb "are" is plural, and the subject "picnic" is singular. Therefore, the verb "is" agrees with the subject "picnic".

The flowers were put in the holder and situated throughout the office.

Correct sentence: The flowers were put in the holders and situated throughout the office.

The noun "flowers" is plural, so it should match with the plural noun "holders" for grammatical agreement. Using "holders" also fits the meaning, as flowers placed throughout the office implies multiple containers in different locations. Therefore, "holders" is both grammatically correct and logically appropriate.

After working for so many years, the chef declared that Jenny’s ability to make delicious soups was better than anyone else.

Correct sentence: After working for so many years, the chef declared that Jenny’s ability to make delicious soups was better than anyone else’s skill.

The original sentence is incorrect because it compares Jenny’s ability to anyone else, which is a person, not a skill — this creates an illogical comparison. The corrected sentence, "better than anyone else’s skill," properly compares two similar things: Jenny’s ability and other people’s skills. For comparisons to be clear and grammatically correct, both sides must match in kind.

By signing a deal, the parties to the deal each except the terms and conditions.

Correct sentence: By signing a deal, the parties to the deal each accept the terms and conditions.

"Except" and "accept" are examples of homophones. To "accept" something means to consent or receive it which fits the context of agreeing to terms and conditions, where "except" specifies that something should not be included which does not make sense in this sentence. So, the correct sentence uses correct verb "accept" instead of "except" because the parties are agreeing to the terms.