Li Lei usually helps his parents clean the rooms and buy some things.and不是要前后一致的吗?为什么这个句子help加s,buy不加s

分类: 作业答案 • 2021-12-19 16:30:56

问题描述：

Li Lei usually helps his parents clean the rooms and buy some things.
and不是要前后一致的吗?为什么这个句子help加s,buy不加s

答