Often when he something that him he wasted his time drawing little pictures.A. should be

问题补充：

Often, when he something that him, he wasted his time drawing little pictures.

A. should be doing, gave

B. should have been doing, was given

C. should do, was given

D. should have been doing, had given

答案：

A. should be doing, gave

(答案→)B. should have been doing, was given

C. should do, was given

D. should have been doing, had given

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