—Listen! Peter is singing in the classroom! —It _____ be him. He has gone back to his hometown.
#74925
A
must
B
mustn’t
C
may not
D
can’t
推荐题目
—Jenny,how did your math exam go?—I thought I ________,but in fact I came in the top 10% in the class.
#63590
A
might have failed
B
couldn’t have failed
C
should have failed
D
mustn’t have failed
—Look! Is that Mr. Green?—It be Mr. Green. He has gone to Shanghai.
#75596
A
must
B
can
C
mustn’t
D
can’t
Oh, I’m not feeling well in the stomach. I ______ so much fried chicken just now.
#63065
A
shouldn’t eat
B
mustn’t have eaten
C
mustn’t eat
D
shouldn’t have eaten
You ________ in person; a telephone would have been enough.
#62596
A
couldn’t have come
B
needn’t have come
C
shouldn’t have come
D
mustn’t have come