Tom tried his best to keep awake, but the performance was so boring that he coul

游客2023-11-21  59

问题 Tom tried his best to keep awake, but the performance was so boring that he couldn’t help to sleep.

选项 A、dropping off
B、dropping down
C、dropping away
D、dropping out

答案 A

解析 drop off可以有“打盹,打瞌睡”的意思,drop off to sleep则是“睡着”的意思,符合本题的题意。其他三个选项分别是:drop down意为“(使)落下,迅速低下身体等”; drop away意为“陆续离开,逐渐减少等”;drop out意为“退出,退学等”,均不符合本题的题意。
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