早教吧作业答案频道 -->英语-->
Chinasendpeopleintospacebefore,butnowwecan..A.can’tB.couldn’tC.maynot
题目详情
| China__ send people into space before, but now we can.. A. can’t B. couldn’t C. may not |
▼优质解答
答案和解析
| B |
| 中国以前不能把人送入太空，但是现在我们能。以前不能，所以要用一般过去时，所以选B。 |
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