The police ______ for the thief everywhere when he suddenly appeared in a theatre.

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问题 The police ______ for the thief everywhere when he suddenly appeared in a theatre.

选项 A、search
B、have searched
C、were searching
D、are searching

答案C

解析句式“进行时+when+一般时”表示“正在做某事，就在这时……”。例如： We were swimming in the river when it began to rain．与此类似，应选C。

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英语

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