问题

rew taught his students how to develop thebasic skills in the physics class, ______ everything through jokes andexperiments

A:worked
B:would work
C:would beworking
D:has beenworking

正确答案是：

同类题型

David loves volleyball very much, and he ______ about his volleyball team in his future books.

I want to know if I__________ smoke here.—No, you _________.Could you see the sign “NO SMOKING” there?

Mike reading playing computer games.

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es ________ on the PPT, Lee listened to the teacher ________.