BOb has been collecting kites__?A since 4 years agoB since he was ten years oldC for 4 years

Bob has a great collection of shells. He has been ___shells___ three years. A.collected,since B.collecting,about C.collect,during D.collecting,for Has Bob been to this town before? what does Sam collect?He___stamps A.collected B.is collecting C.has been collecting D.collects 怎样转换“Bob has been away from school for one hour”的同义句? Bob has been s_a lot of old coins in his bedroom for three years What does Bob collet.He collects kites.How long has he been collecting kites.He's been kites sinc bob has中文意思 have you ever been to collect something? BOb has been collecting kites__?A since 4 years agoB since he was ten years oldC for 4 years BOB has been s__ a lot of old coins in his bedroom for three years.填什么 has been not only ..but also 不但.而且.代替.not only ..but also 不但.而且. 可换成什么...?eg.Not only Tom but also Bob has been to that island. ＿Tom and Bob＿been to that island. collect collect collect 一道英语选择题,个人觉得有问题,Alice and Bob collect film star photos.She has more photos than ▁▁▁▁▁▁▁▁.A he B his C Bob's D himself答案选了A,但是好像这两者是不能进行比较的 这个题目选什么呀 where is bob?He _______America for a weekA has gone off to B has left for C has been off to D has set off to请说明原因, It_____that Bob has been away for a long time.He hasn't come back yet.A seems B looks C looks like D seems like