—Where is the reference book? It was here a moment ago.—Someone must (take) ____

游客2024-07-07  11

问题 —Where is the reference book? It was here a moment ago.—Someone must (take) ______ it by mistake.

选项

答案 have taken

解析 本题测试的是固定搭配。全句的意思是:“我的参考书呢?刚才还在这儿。一定是有人拿错了。”must have done是固定搭配,表示对过去发生的事情的肯定推测。因此,应该填have taken。
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