问题
According to a research, smoking is bad for our health.—Yes, especially for teenagers. Students _______ to smoke.
A:should be allowed
B:shouldn’t allow
C:shouldn’t be allowed
D:should allow;
B:shouldn’t allow
C:shouldn’t be allowed
D:should allow;
正确答案是：
同类题型
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Not until all the fish died in the river_____ how serious the pollution was.
There are many famous cultural relics in our country, many _______ thousands of years ago.
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