Tom has been collecting stamps since接：he ten years old（be）用括号的动词填空

what does Sam collect?He___stamps A.collected B.is collecting C.has been collecting D.collects all the students except tom has been abroad改错 Tom has been on the island since two years.(改错) it is 3 years since Tom has been abroad tom didnt smoke has been two years有语法错误吗 Tom has been a________(成员) of the volleyball team Tom ________France .He _____Paris for three weeks.a.has been to :has been tob.has gone to :has been inc.has been to:has been ind..has gone to; has been to并说明原因 Tom got sick last May and has been in bed since then.为什么has been 而不是had been the room has been cleaned by tom 对tom提问____ ____the room____ cleaned ____ 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 Tom’s grandfather （has been dead） for five years为什么不是has been died? 告诉我原因谢谢. 这句话有几个助动词The work has been done by tom .has 和 been哪个是助动词 为啥 Tom has been in China for three years.(改为同义句)1.Tom has been in China ( ) three years( ).2.Three year ( ) ( ) ( ) Tom cane to China.3.Tom ( ) ( ) China three years ( ).4.It is ( ) ( ) ( ) Tom came to China. Tom has been in China for three years.(改为同义句)1.Tom has been in China ( ) three years( ).2.Three year ( ) ( ) ( ) Tom cane to China.3.Tom ( ) ( ) China three years ( ).4.It is ( ) ( ) ( ) Tom came to China. have you ever been to collect something? Tom ( ) the Islands of Hawaii.He surfs three times a day there .A has gone to B has gone on C has been for D has been I have been to the Water World .Tom has been there,too句行转换句型转换1.I have been to the Water World .Tom has been there too_______Tom_______I have been to the Water World -I have been to hongkong.-____.he went there last summer A.so has tom B.so did tom C.so tom has D.