nick sometimes helps his mum _____ (clean) the house
问题描述:
nick sometimes helps his mum _____ (clean) the house
答
填to clean或clean,老师给我们整理时让我们反复记的,决对正确,to可省略
nick sometimes helps his mum _____ (clean) the house
填to clean或clean,老师给我们整理时让我们反复记的,决对正确,to可省略