【简答题】A.The plane is delayed by the late arrival of some passengers. B.The plane is delayed by some mechanical failure. C.The weather does not allow the plane to take off. D.The luggage of some passenger is...
【简答题】听录音,完成句子。 l. This is a _________.One ________ . 2.These are _________.Many _________. 3.This is a _________.One ________ . 4.These are _________.Many __________ . 5. Boys and girls are __________. 6. ...