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He'salreadyalittleweakinChinese,he?A.isHe'salreadyalittleweakinChinese,he?A.isn'tB.hasn't为什么用isn't,already不是经常出现在完成时中吗?

题目详情
He's already a little weak in Chinese,__ he?A.is
He's already a little weak in Chinese,__ he?
A.isn't B.hasn't
为什么用isn't,already不是经常出现在完成时中吗?
▼优质解答
答案和解析
前面的's 是is