The Apirport Railway has been ____mid-1998.A.operating B.ope

The Apirport Railway has been ____mid-1998.A.operating B.ope The Airport Railway has been _____mid-1998.A.operating B.ope （1)The cinema______since 1993.A.has been open B.has been ope The factory has been____for two years A open B to open C ope The hear railway station has been in s--- since 2002 the cpu has been disabled by the guest operating system.you the cpu has been disabled by the operating system.you will n The new railway station has been in _ since 2003,now it can The book shop () for eight years.A.has been open B..has been The sick______cured.A、has been B、has C、have been D、have the shop__for 5years . A has opened B has open C has been op How long has the shop__.A,been open.B been opened 答案是B为什么