包拯中过状元吗:who 后面应该接has 还是have 例如 who have/s my book?

who 后面应该接has 还是have 例如 who have/s my book? 还有一题,-harry should have been warned of it.-后面是so he was 还是 so he has?谢谢 my father后是加have还是has 用HAVE 还是HAS? 用BEEN 还是不用? who has the certificate of teaching chinese as foreign language i wanna have a look!thanks! They each ____ an apple. 次句用have还是 has? make后面应该接adj.还是adv. who has English joke? WHAT WHO HOW WHRER等特殊疑问词后面应该接什么词语啊? when and where to go for holiday have not been decided yet.这句是用have还是has