- did you spend working out the problem? -About two hours. A. How much B. How many C. How soon D. How long 题目和参考答案——青夏教育精英家教网—

题目内容

—______did you spend working out the problem?

—About two hours.

A. How much　　　　 B. How many　　　　 C. How soon　　　　 D. How long

答案：D
解析：

因为问的是用了多长时间，因此用how long提问。

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