单项选择题

I shall tell you what he （） at three o’clock yesterday afternoon.

A. was doing
B. did
C. had been doing
D. has done

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单项选择题
（） the claim about German economic might, it is somewhat surprising how relatively small the German economy actually is.

A. To give
B. Given
C. Giving
D. Having given
单项选择题
Not only （） us light, but also it gives us heat.

A. the sun gives
B. the sun does give
C. gives the sun
D. does the sun give
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