Question 25: My mother _______ me a new electric bike last week.
A. buys B. has bought C. will buy D. bought

The correct answer is D. bought. This is because the action of buying the electric bike happened in the past, so we use the past simple tense.

Question 27: You will feel _______ if you have a nice outfit.
A. confidently B. confide C. confident D. confidence

The correct answer is C. confident. This is because "confident" is an adjective that describes how you feel, while the other options are either adverbs or nouns.

Question 28: The grey box is _______ than the red one.
A. heavy B. heaviest C. as heavy D. heavier

The correct answer is D. heavier. This is because we are comparing the weight of the grey box to the weight of the red one, and "heavier" is the comparative form of the adjective "heavy".

Question 34: No one wants to go to this beach _______ it is full of trash.
A. because B.so C.although D.but

The correct answer is C. although. This is because "although" is used to introduce a contrast or contradiction, indicating that despite the beach being full of trash, no one wants to go there.

Question 35: The _______ of the floods this year has been very terrible.
A. destroy B.destruction C. destructive D.destructively

The correct answer is B. destruction. This is because "destruction" is a noun that refers to the act or process of destroying, while the other options are either verbs or adverbs.

Question 38: The man _______ discovered America is Christopher Columbus.
A.which B.who C.what D. whose

The correct answer is B. who. This is because "who" is used to refer to a person, and in this sentence, we are referring to the man who discovered America, which is Christopher Columbus.