试题详情
单项选择 较难0.4 引用2 组卷437
I noticed that he was wearing shoes that did not match. He       too hard to notice.
A.might be workingB.can have worked
C.must have been workingD.should have been worked
18-19高二上·江苏苏州·期中
知识点:work(奏效;起作用)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!