____ many times ,but he still couldn't understand it.

____ many times ,but he still couldn't understand it.
A having been told B having told
C he had been told D though he had been told
答案是选择C,为什么呢?
英语人气:318 ℃时间:2019-10-19 00:34:45
优质解答
C he had been told
他被告知好几次,但是还是不能理解
这里的关键在于but
连词but连接两个句子
所以前后都是需要谓语的完整句子,这句不是非谓语.
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