单项选择题

Nobody but Tom and Mary ______ the secret.

A. know
B. knows
C. have known
D. is known
<上一题 目录 下一题>
热门 试题

单项选择题
It was in that lab ______ they did the chemical experiment.
A. which
B. where
C. that
D. what
单项选择题
The medicine has many functions, ______ are unknown to us.
A. some of that
B. some of them
C. some of which
D. some of what
相关试题