适当形式填空. His aunt will ask two of his friends ____(come) _____(do exercise) is good for us.
问题描述：
适当形式填空. His aunt will ask two of his friends ____(come) _____(do exercise) is good for us.
答
to come
Doing exercise为啥填to come 和 Doing exercise1. ask sb to do sth2, 动词作主语时，一般用to do 或者doing还有一个The boy sits _______his desk and does his homeworkA.in B.on C.atD.withC atsit at the desk坐在桌子边