问题描述:
We needn't have taken warm sweaters. We _______ the space in our luggage for more books
a. can have used b. could have used c. ought to use
d. may have done
为什么选b 不选C, 高手们帮一下忙把,谢谢了!
a. can have used b. could have used c. ought to use
d. may have done
为什么选b 不选C, 高手们帮一下忙把,谢谢了!
问题解答:
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