单项选择题

What we have seen is ______.

A. from what we heard
B. all what we heard
C. to what we have heard
D. from what we have heard
<上一题 目录 下一题>
热门 试题

单项选择题
______ you may do, you must do it well.
A. Which
B. Whenever
C. Whatever
D. When
相关试题