he airport has been in ___ since 2000 (serve)请问括号里填什么?

he airport has been in ___ since 2000 (serve)请问括号里填什么? the airport has been in_____(服务）since 1998 He was caught in a traffic jam and by the time he reached the airport his friend's plane ( ).A.has alread taken off B.had already taken off C.has been taken offD.had been taken off He arrived at the airport at 9 o'clock,only to find that the plane __ for half an houra:had leftb:has leftc:has been awayd:had been away long has he been away? He has never been abroad,has he?怎么翻译 The airport has been in s____since 1998.横线上应该填什么单词? As a result of the heavy rain,the airport has been closed up until further The Airport Railway has been _____mid-1998.A.operating B.operate C.operated D.to perate he has been to beijing.什么时态? 翻译: He has been dozens of times. he has been there _twice____.画线提问 he has been in english since last He has been here ___since yesterday.___ He has never been there.英译汉 He has not been back yet He has been( )(die) fou two days. He has been abroad many times.