改正下列句子 her clothes is very dirty.she spends most of he times on her study.

题目

改正下列句子 her clothes is very dirty.she spends most of he times on her study.
还有：
there is different kinds of fish in the river.
he didn't finish his homeworks.
a grooup of sheeps are eating grass there.

答案

her 【clothes永远是复数 】【are】very dirty.she spends most of he times on her study.
there 【are】 【different kinds of fish表示种类,复数】 in the river.
he didn't finish his 【homework不可数】.
a group of 【sheep单复数同样的形式】 are eating grass there.