问题

She looks very happy. She ______ have passed the exam.—I guess so. It’s not difficult after all.
A:should
B:could
C:must
D:might
B:could
C:must
D:might
正确答案是:
同类题型
Amy couldn’t stop _________ when her friend told her the funny joke.
Off the east, the sky looked pale enough to ____ the storm would be passing quickly.
The city ____ by an army of 600 menwas difficult to take.
I haven’t seen you for a couple of days .What have you been up
She did what she could _______ us. Though 3,000 dollars is a lot of money for her.