"my mother has a lot of housework to do every week"中为什么用"to

"my mother has a lot of housework to do every week"中为什么用"to My mother has a lot of things to do every day___ ___ a lot o mother has a lot of housework (do) every day Is your mother have a lot of housework to do every day? 英语高手指点迷津my mother has a lot of things to do every day.(改为同义句 My mother has __to do every day. A.a lot of works B.a lot of My mother has to do housework every day 改为否定句怎么改?太急了! My mother does a lot of housework before going to work,but s 英语翻译Mrs.Brown has a lot of housework to do today.So she can after school i have to do a lot of housework _____ my parent Have you to do a lot of housework?找错 Have you to do a lot of housework?(改错)