I am------(study)very hard in the classroom 用所给词的适当形式填空

问题描述:

I am------(study)very hard in the classroom 用所给词的适当形式填空

答案:studying
am/ is/ are + doing ( 现在分词) 构成现在进行时
不明白的再问哟,请及时采纳,多谢!