— Is Jack on duty today? — It ________ be him. It's his turn tomorrow.
#62645
A
mustn't
B
won't
C
can't
D
needn't
推荐题目
—Why are your eyes so red? You _______ have slept well last night.—Yeah, I stayed up late writing a report.
#62856
A
can’t
B
mustn’t
C
needn’t
D
won’t
—You shouldn’t have shouted at your mother. It really hurt her. —Exactly. I ________ crazy at the time.
#62574
A
must be
B
could be
C
must have been
D
could have been
. - The speaker is a tall man with glasses. - Then it_____ be Mr. Smith, who is short and thin.
#62608
A
wouldn't
B
won't
C
mustn't
D
can't
The school rules state that no child ___ be allowed out of the school during the day , unless accompanied by an adult .
#62755
A
may
B
dare
C
shall
D
must