单项选择 适中0.65 引用1 组卷69
During our trip to the Great Wall last week, I couldn’t stop thinking about how huge a project it ________ have been to build it in ancient times.
| A．must | B．could | C．should | D．need |
23-24高二下·天津·阶段练习
知识点：couldmust have doneshould have donecan/could have done的用法should(ought to) have done的用法need have done的用法must have done的用法 答案解析 【答案】很抱歉，登录后才可免费查看答案和解析！ 立即登录
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