题目内容：

he ____(go fishing )next week
_____li lei _____(do) his homework tonight?
where ___they ____(buy) the apples?
用be going to 填空

优质解答

is going to go fishing
Is going to do
are going to buy

追问：

写成is going to fishing 可以吗

追答：

不行 , to 后面要 跟动词原形