【題目】They must have stayed at home last night,________?

A. mustn’t theyB. haven’t theyC. didn’t theyD. must they

【答案】C

【解析】

考查反意疑問句。句意:他們昨晚一定是呆在家里了,是嗎?本句中must have done表示對過去的情況進行推測(一般句中有明確的過去時間狀語),反意疑問句要根據(jù)陳述部分謂語的情況用“didn't+主語”或“wasn't/weren't+主語”。故選C。

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