单项选择题

No one knows ______ how it happened.

A. rightly
B. right
C. correctly
D. for sure
<上一题 目录 下一题>
热门 试题

单项选择题
The food in that restaurant is very good; ______ it is cheap.
A. in fact
B. therefore
C. moreover
D. however
单项选择题
______, they refused to come to the party.
A. Strange enough
B. Slowly
C. Happily
D. Always
相关试题