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这句子有木有语法错误
I am not smart but hadworkingdo the thing I am interested in.

I'm not smart but I do the things that I'm interested in very hard.hardworking.后不能加do?hard-working 是一个形容词 应该可以加 do 但至少语言习惯上我们不常用一般来说都用来说I’m hard-working.这样呢I am not smart but a hardworking student do the thing I am interested in.