【題目】–Do you know where your father is? -I think he ____ on the computer.

A. must chat B. must be chatted C. could chat D. could be chatting

【答案】D

【解析】

句意:-你知道你爸爸在哪里嗎?-我想他可能在電腦上聊天。must chat一定聊天;must be chatted一定被聊天;could chat可能聊天;could be chatting可能正在聊天。根據(jù)對話的情景可知,這里問的是一個正在發(fā)生的動詞,故答語中在表示猜測時,應用進行時態(tài),故選D。

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