—We are worried about Tom. Why hasn’t he come back?
—Don’t worry. He ______ in a traffic jam.

A．might be caughtB．may have been caught
C．can have been caughtD．should have been caught

B

解析試題分析：考查情態(tài)動(dòng)詞+完成式的用法：句意：--我們很擔(dān)心湯姆。為什么他還沒有來？--別擔(dān)心，他有可能遇到交通堵塞了。May have done過去可能做了…，因?yàn)槭莃e caught in“遇上了”，can 表示對過去的推測，一般用于否定和疑問句中，should have done過去本應(yīng)該做卻沒有做，選B。
考點(diǎn)：考查情態(tài)動(dòng)詞+完成式的用法

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