Question

 The astronaut is so tired that he ______ for eleven hours.

A. has been asleep    B. has fallen asleep     C. has gone to bed       D. has gone to sleep

Answer 1

【答案】A

【解析】考查现在完成的用法。for eleven hours指一段时间，不可以用短暂性动词，be asleep指“睡着”的状态，fall asleep指“睡着”的动作 ，所以选择答案A。