Question

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 trying to improve the situation.

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

Answer 1

C

解析:

考查动词时态。语境意义：“这个问题还没解决，我们正在努力解决这个问题”，因此用现在进行时。对动词时态的考查历来是高考试卷的重点内容。