look!the student is helping the old man cross the roadlook!the student is helping the old man ___ ____the road(改为同义句)
问题描述：
look!the student is helping the old man cross the road
look!the student is helping the old man ___ ____the road(改为同义句)
答
正确答案为：
to cross
help sb (to) do sth 帮助某人做某事
help 后面可以跟动词原形,也可以跟带to的动词不定式,两者是一样的
所以这里填写 to cross
看,这个学生正在帮老人过马路.