I told him the __ reason that I thought he had a right to know what is going on.

问题描述:

I told him the __ reason that I thought he had a right to know what is going on.
I told him the ______ reason that I thought he had a right to know what’s going on. a. sole b. merec. onlyd. unique

答案是C.
这是一个惯用法,only reason
如:
But money is not the only reason.但工资也不是跳槽的唯一原因.
That's the only reason for feeling superior.那是我觉着优越的唯一原因了.
That's the only reason you started all this?那是你开始这的唯一原因?答案给的A-sole 呀,我也认为选C-only上边的例句都是词典里的标准例句。由此看那,标准答案有问题,或者说,这个题目出的不好甚至不对。你可以问老师这些词典里的列句为什么不对。