Cars play an important role in modern life, but they ______ also cause many problems like air pollution.
#63554
A
should
B
can
C
must
D
will
推荐题目
---Could I go boating this weekend, Dad?---Yes, you ________. But you ________ come back before lunch.
#74541
A
could; must
B
can; must
C
could; should
D
must; should
---Where’s Lucy? ---I’m not sure. She ________ in the school library.
#76767
A
maybe
B
must be
C
may be
D
will be
—Jim, ________ you answer the last question? -- Sorry, I can’t. It’s too hard.
#78156
A
need
B
may
C
must
D
can
---Fifty dollars for such a T-shirt! You _______ be joking!---I’m serious．It’s made of silk.
#75585
A
must
B
need
C
may
D
can
Their answers are exactly the same. One of them ___ from the other.
#62605
A
must copy
B
must have copied
C
should copy
D
should have copied