Peter is swimming_______(cross)the river.急,
问题描述:
Peter is swimming_______(cross)the river.急,
不知是用crossing,还是cross
答
cross,因为前面已经是动词了,后面不用ing形式
Peter is swimming_______(cross)the river.急,
不知是用crossing,还是cross
cross,因为前面已经是动词了,后面不用ing形式