Sentence: She was kept awake for most of the night by the ... of a mosquito.

[Ngoanhquan]

1. She was kept awake for most of the night by the _____ of a mosquito in her ear.
A. whine B. moan C. groan D. screech
2. If I were you, I would regard their offer with considerable _____, because it seems too good to be true.
A. suspicion B. doubt C. reservation D. disbelief
(Please explain your choice. Thank you so much)

[Cerberus™]

Whine: that's the sound a mosquito makes, I guess it is idiom.

Suspicion: you regard something with suspicion when there is something about it that is probably not as good as it seems. That is a common expression.

However, I'd say the other three are possible as well, though perhaps not as common: doubt as to its trustworthiness, reservation as to accepting it, or disbelief as to the truth of its fulfillment or of its conditions.

[Maryann]

Hi, Ngoanhquan.
The variant of "mosquito screech" is also possible.