they went there to watch the iron tower___ a.to be erected b

they went there to watch the iron tower___ a.to be erected b the children went there to watch the iron tower ___.C,be ere 英语主被动的问题the children went there to watch the iron tower( ).A 帮下忙 The children went there to watch the iron tower ______.A The children went there to watch the iron tower being erecte The children went there to watch the iron tower （being erect The children went there to watch the iron tower being ecrect The problem ( ),they all went home happily.A.setting B.to be They went to the park,_____?A.It's red B.do they C.did they they went to the cinema ,____?A.didn't they B.do they C.did They come here ( ) the doctor A see B watch C to seeD to wat They __allowed to watch TV too long.A.don"t be B.aren"t C.do