---Look at the boy running on the playground. Is it David? ---It ______ be him. I saw him go to the teachers’ office just now.
#76689
A
mustn’t
B
can’t
C
couldn’t
D
must
推荐题目
—Look, someone is coming. Guess who ____________.—Jack. He’s always on time.
#78154
A
can it be
B
it can be
C
can he be
D
he may be
Students ________ remain in their seats until all the papers have been collected.
#62519
A
shall
B
might
C
could
D
will
Food safety is important. Rules to stop people from food pollution.
#76536
A
must make
B
must be made
C
can’t make
D
can’t be made
—Are you coming for dinner? —I’m not quite sure. I ______ go to my uncle’s instead.
#62241
A
must
B
would
C
should
D
might
We________finish it ahead of time, though it was such a tough task.
#62441
A
could
B
would
C
were able to
D
ought to