— Is there any possible way to help the children get rid of such a bad habit?
— To be honest, it’s very hard, but we on this problem.
A. work
B. worked
C. are working
D. were working
网友回答
A. work
B. worked
(答案→)C. are working
D. were working
解析：考查时态，句意：有什么可能的方法帮助孩子们摆脱这种坏习惯吗？说实话，非常困难，但是我们正在从事这个问题。根据语境从事这个问题，指的是现阶段进行的动过，所以用现在进行时态，故选C。