They have got lost, or had an accident.
#62726
A
can
B
might
C
must
D
mustn’t
推荐题目
You ___________ finish the report today. Any time before this weekend is OK.
#75679
A
mustn’t
B
needn’t
C
must
D
need
“No student,”the headteacher stressed, “_______ go out of the school after ten o’clock at night without my permission. ”
#63373
A
shall
B
will
C
must
D
may
(2013·安徽师大附中高三七模)Don't use water to put out the fire if oil catches fire. As is known, oil ________ float on water.
#62449
A
shall
B
must
C
may
D
will
— Must we wear our school uniform this afternoon?— No, you. All of us will go on an outing.
#75739
A
mustn't
B
can't
C
needn't
D
couldn't