Bob will go to the picnic with us if he ( ) (not go) to visit his grandparents 用括号中所给的动词适用括号中所给的动词适当形式填空

问题描述:

Bob will go to the picnic with us if he ( ) (not go) to visit his grandparents 用括号中所给的动词适
用括号中所给的动词适当形式填空