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-These tomatoes are huge! You must have watered them a lot! -Yes, I . They ought

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-These tomatoes are huge! You must have watered them a lot! -Yes, I . They ought

—These tomatoesare huge! You must have watered them a lot!

—Yes, I ________.They ought to be ripe enough to pick by next Friday.

A.do

B.must

C.have

D.did

 

试题答案

答案:D

解析:

did过去时,指代上面提到的water the tomatoes。