12．-Where ______ he go on vacation？
-He went to the mountains．（　�。�
A．isB．doesC．hasD．did

分析 --他去了哪里度假？--他去了山里．

解答 答案：D．考查助動詞．句意"--他去了哪里度假？--他去了山里．"根據(jù)回答He went to the mountains．可知句子是一般過去時，所以上句應(yīng)填did，do的過去式．故選D．

點評 仔細(xì)分析句子的結(jié)構(gòu)，根據(jù)句子的時態(tài)進行作答．

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