Question

【题目】The astronaut is so tired that he ________ for eleven hours.

A. has gone to bed B. has been asleep

C. has gone to sleep D. has fallen asleep

Answer 1

【答案】B

【解析】句意：那名宇航员是如此的累以至于他已经睡了11个小时了。本句是现在完成时态，后面跟for引导的时间段，动词要用延续性动词，只有be asleep表示状态，故答案选B。