— Have you solved your problem?— I’ve kept on thinking about that matter________

题型：不详难度：来源：

— Have you solved your problem?
— I’ve kept on thinking about that matter__________, but I have had no idea.

A．at times	B．some time
C．at a time	D．all the time

答案

D

解析

试题分析：—你解决了你的问题了吗？—我一直在考虑这个问题，但我还没有主意。A. at times有时； B. some time一段时间； C. at a time一次； D. all the time总是，一直，根据句意此题选D。