John still can't work out the problem __I have helped him several times.

John still can't work out the problem __I have helped him several times.
A because B even C since D though
选啥?
为什么不选C
其他人气:766 ℃时间:2020-06-11 14:44:27
优质解答
D though
虽然我已经帮了他几次,John仍然解不出那个问题
我来回答
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