题目有错吧,读不通You can hardly imagine the trouble We had___ in touch with him again.have trouble in doing sth in可以省略，get in touch是取得联系,keep in touch是保持联系，所以选A题中没有have trouble in doing sth 的句型啊the trouble是先行词，后面的we had就是定语从句，实际上we的前面有一个that，，这样一来就通了啊，we had trouble in getting touch with一定要采纳我哦，谢谢了