The washing machine is of excellent quality. If there __________ be any problem within the first three years, we would fix it for free.
#87028
A
could
B
might
C
shall
D
should
推荐题目
---My little daughter is coughing worse than ever. ---She ______ to the hospital yesterday.
#86468
A
had to be taken
B
should have taken
C
must have been taken
D
ought to have been taken
Without your help, I ____the exam last term. 
#89943
A
failed in
B
would have failed
C
wouldn’t pass
D
would fail