帮个忙用since,for,have gone,have been填1.We have learned five lessons__the beginning of this term.
2.MrsLiaohasbeeninhospital__lastweek.3.Ihavestayedatmyaunt's___twoweeks.4.Wherearethe...
2.Mrs Liao has been in hospital__last week. 3.I have stayed at my aunt's___two weeks. 4.Where are the boy students? They___to the library. 5.Is your father in? No,he__to Shenzhen. ___he ever ___there befor ? Yes,he___there several times. 6.I want to go to Shanghai for a visit because I___never____to that city before.
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