改写They are going to visit Water City tomorrow.They [ ] [ ]Water City before.

问题描述:

改写They are going to visit Water City tomorrow.They [ ] [ ]Water City before.

我觉得是never visited,因为没去过,所以明天准备去.那么改为haven’t visited行么是的。用haven't 现在完成时,表示到目前为止还没有去过。。。没错是havent,如果是never就是have never visited,虽然before应该用过去式,但是这边的语句的意思是要用完成时