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
When a pencil is partly in a glass of water, it looks as if ____. 
#89905
A
breaks
B
has broken
C
were broken
D
had been broken
The captain urged that the mission ______ before dark.
#88032
A
must be finished
B
be finished
C
ought to be finished
D
was finished