I should not have laughed if I________you were serious.               
#86477
A
thought
B
would think
C
had thought
D
have thought
推荐题目
He suggested the problem worth paying attention ______ at the meeting.
#86824
A
to be discussed
B
to being discussed
C
to discuss
D
to discussing
I left very early last night, but I wish I _____ so early.
#89363
A
didn’t leave      
B
hadn’t left
C
haven’t left      
D
couldn’t leave