The city at one time________ prosperous, for it enjoyed a high level of civilization.
| A．may be | B．may have been | C．must be | D．must have been |
20-21高一下·广东深圳·阶段练习 查看更多[2]
更新时间：2021-06-27 01:36:55
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【知识点】 must have done的用法
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【推荐1】It ______ last night, as the ground is still wet.
| A．may have rained | B．must rain | C．can’t have rained | D．must have rained |
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