Our teachers often tell us “the harder you study the more questions you will think of．”A

问题补充：

Our teachers often tell us, “the harder you study, the more questions you will think of．”

A. asking

B. to ask

C. being asked

D. to be asked

答案：

A. asking

(答案→)B. to ask

C. being asked

D. to be asked

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