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将下列句子改为被动语态 He bought a bike t将下列句子改为被动语态1.He bought a bike two days ago .A bike()()two days ago2.We must send more satellites into space More satellites ()()()into space3.Scientists may

题目详情
将下列句子改为被动语态 He bought a bike t
将下列句子改为被动语态
1.He bought a bike two days ago .A bike()()two days ago
2.We must send more satellites into space
More satellites ()()()into space
3.Scientists may clone humans some day
Humans()()()()scientists some day
4.He can’t finish his work in such a short time.
His work()()()in such a short time
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答案和解析



was bought

must be sent

may be cloned by

can't be finished