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Since nobody is answering the phone, they ______.A、should have leftB、must have
Since nobody is answering the phone, they ______.A、should have leftB、must have
游客
2024-07-05
47
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问题
Since nobody is answering the phone, they ______.
选项
A、should have left
B、must have left
C、need have left
D、can have left
答案
B
解析
本题考查的是对过去事实的推测。如果对过去的事实有较为肯定的推测,应用must have done sth.,故选项B为正确答案。
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