how long have the computers been used by you?改为主动

how long have the computers been used by you?改为主动 "How long have you been How long have you been married 可否改为How long did you marry ---How long have you been in the class today?-----_________. The wallet must have been found by one of the villagers改为主动句 how long have you been reading the book和how long did you rea how you have been affected by the university's decision? How long have you been skating? how long have you been playing basketball ? How long have you been swimming? How long have you been ____? 1.How long have you been here?