单句改错题1.Tom is the person I want to make friends with.这句话可不可以
单句改错题 1.Tom is the person I want to make friends with. 这句话可不可以在I 的前面添加that? 2.I'll never forget the days which we spent together. 这句话可不可以把which改成that? 3.This is the palace which we visited two years ago. 这句话可不可以把which 改成that?