题目

A large crowd _______ wildly as the pilot _________ her plane safely in California. A. had cheered; was landing   B. had cheered; landed C. was cheering; had landed   D. was cheering; landed 答案：D。 解析: as表示两个动作同时进行，“一边……一边……”，故不能与强调动作先后的一般过去或过去完成或过去进行的时态搭配使用。该句前后都使用一般过去也是可以接受的。

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