I hope my mum()a toy car for me.A.buy B.buys.C.buying.
问题描述：
I hope my mum()a toy car for me.A.buy B.buys.C.buying.
答
I hope my mum ( buy ) a toy car for me
这是一个宾语从句，相当于是I hope that my mum ( buy ) a toy car for me
that可以省略
答
I hope my mum(buy)a toy car for me.