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