Food safety is important. Rules must ________ stop people from food pollution.
#44443
A
be made
B
be made to
C
make
D
make to
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Stamps ______ sending letters.
#45020
A
used to
B
are used to
C
are used for
D
are using
—Come in Peter, I want to show something to you. —Oh, how nice of you! I______ you ______to bring me a gift.
#44807
A
never think; are going
B
never thought; were going
C
don’t think; were going
D
hadn’t thought; were going
Teenagers _______ allowed to drive in the street .
#44554
A
should not be
B
should be not
C
not should be
D
shouldn’t
People who drink wine______ to drive. 
#44582
A
don’t allow
B
isn’t allowed
C
shouldn’t allow
D
mustn’t be allowed