To tell you the truth, it’ s very hard for us to help them get rid of Internet addiction. But we ______ on this problem trying t

admin2016-06-10  26

问题 To tell you the truth, it’ s very hard for us to help them get rid of Internet addiction. But we ______ on this problem trying to improve the situation.

选项 A、worked
B、had worked
C、are working
D、had been working

答案C

解析 根据语境意义,我们可知这个动作正在进行中,因此用现在进行时。
转载请注明原文地址:https://kaotiyun.com/show/k0iK777K
0

随机试题
最新回复(0)