–I drove to Zhuhai for the air show last week.-Is that         you had a few days off?
#77678
A
why
B
when
C
what
D
where
推荐题目
 _________ many times, but he still couldn’t understand it.
#32413
A
Having been told
B
Though he had been told
C
He was told
D
Having told
No one knows exactly ______ this important discovery was made.
#33284
A
that   
B
that how   
C
what   
D
when