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英语单项选择,并说明理由.

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英语单项选择,并说明理由.
1.the doctor looked over the boy carefully______he was sent into the hospital.
A.as soon as B.until C.while D.before
2.Do you have a class meeting _____the afternoon of May 2nd?
A.in B.at C.on D.for
3.Alice has been in China for ten years.She _____be able to speak Chinese well now.
A.need B.must C.can D.would
英语单项选择,并说明理由.
第一题选c! 理由是要送到了 医院才有医生检查!
第二题选in 固定搭配
第三题选must!在这里可以表示推测什么的! 选can 与be able to 有些 同意!