I think the dictionary is ____(help) to your study.用所给词的适当形式填空

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I think the dictionary is ____(help) to your study.用所给词的适当形式填空

I think the dictionary is ____(help) to your study.用所给词的适当形式填空
I think the dictionary is ____(help) to your study.用所给词的适当形式填空

I think the dictionary is ____(help) to your study.用所给词的适当形式填空
helpful

helpful 有帮助的。。。

helpful

没有前面的is就用helps
有is就用helping
只有现在进行式才有is在前面