当前位置: > 25.He got up so late in the morning so he ___________ working late at night....
题目
25.He got up so late in the morning so he ___________ working late at night.
A.could have been
B.must have been
C.should have been
D.would have been

提问时间:2021-02-09

答案
B.must have been must have done 表示对过去发生动作的肯定推测 a could只用于否定推测 c 该做而未做 d 用于虚拟语气
举一反三
已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
奥巴马演讲不用看稿子.为什么中国领导演讲要看?
想找英语初三上学期的首字母填空练习……
英语翻译
版权所有 CopyRight © 2012-2019 超级试练试题库 All Rights Reserved.