单项选择题

（） Is there any possible way to help them get rid of such a bad habit
--To tell the truth, it’ s very hard. But we （） on this problem.

A. worked
B. had worked
C. are working
D. had been working

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填空题
A.dew B.few C.blew D.new
单项选择题
The use of Chinese by teachers in （） English classroom must be restricted because it will decrease （）time when students are exposed to the English language.

A. the; /
B. an; /
C./; the
D. an; the
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