be seating还是be seated?哪个对 如果都对的话那分别在什么情况下用呢

11.5 Once_____,everyone taking the examination will be given test papers.Once_____,everyone taking the examination will be given test papers.A.seated B.seating C.being seated D.having seated 为什么不能选C,现在分词做状语,而且sb be seate be seating还是be seated?哪个对 如果都对的话那分别在什么情况下用呢 They need a room________ siixty people.A seatedB be seatedC being seatedD seating The pilot asked all the passengers on board to remain _______ as the plane was making a landing.A. seat B. seating C. seated D. to be seating The pilot asked all the passengers on board to remain___to make a landing.A.seat B.seating C.seated D.to be seating seating be lonely 还是be alone be always还是always be? be quick还是be quickly be healthy还是be health be worry还是be worried be ill还是be illness Please remain ____;the winner of the prize will be announced soon.A seating B seated remain doing不行么? can you find a large enough room_______all of us?A seating B seated Cseating D to be seated movies used to be shown in an open space ,with audience seated on benches.为什么不是seating This hall can ___1000 people .you can ___where you like. A.hold scat B,be seated seated C.seat be seated D.hold seating Please remain ______.The winner of the prize will be announced soon.A.seating B.seated C.to seat D.to be seated This hall can ___1000 people .you can ___where you like.A.hold scat B,be seated seated C.seat be seated D.hold seating