题目内容
【题目】He was so deeply moved by his words that he couldn’t fall ________deep into the night.
A. sleep B. asleep C. sleeping D. sleepy
【答案】B
【解析】句意：他对他的话如此的感到了以至于到了深夜他也无法入眠。sleep睡觉，是动词；asleep形容词，在句中常作表语；sleeping是动词的现在分词形式；sleepy困的，困倦的，形容词。这里fall asleep是固定短语，入睡。故应选B。
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