two（and还是or）three times；two（and还是or）three hours?

two（and还是or）three times；two（and还是or）three hours? only two ___ three times a week填or还是and 为什么 到底用two or three times还是twice or three times? Come and see me ( ) two or three ( ). 初二英语两三次twice or three times a week还是two or three times a wee two or three times every month come and see me in------ A.two or three days' B.two or three Come and see me in ( ) A, two or three day's B,two or three come and see me in two or three days' time 初中英语题,come and see me （in two or three days'）我想 知道为什么不写（two 我每周吃两到三次垃圾食品 是“twice or three”还是“two or three”? two or three times a week 和 twice or three times a week哪个对?