问题补充:
--- Is there any possible way to help them get rid of such a bad habit?
--- To tell the truth, it’s very hard. But weon this problem trying to improve the situation.
A. worked
B. had worked
C. are working
D. had been working
答案:
A. worked
B. had worked
(答案→)C. are working
D. had been working
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。