—Why does Mary look so worried today?—I’m not sure, but she _____ a small accident driving here.
#62738
A
must have
B
might have
C
must have had
D
might have had
推荐题目
One of the National Health Regulations is that public schools ______ actively create conditions for sports facilities opened to the public.
#62753
A
shall
B
will
C
might
D
could
(2013·新课标Ⅰ，29)The door________open，no matter how hard she pushed.
#62491
A
shouldn't
B
couldn't
C
wouldn't
D
mightn't
Tom’s score on the test is the highest in the class. He _____.
#62444
A
should study last night
B
should have studied last night
C
must have studied last night
D
must study last night