对冲击机场控制区,强行登占民用航空器的行为,公安机关应该( )

　Tom was the only one of the students who ______ named Outstanding Student.

　______ the final examination is over, we can go outside for a picnic.

　The government _____ up a committee to investigate the air crash.

　There is a man at the reception desk who seems very angry and I think he means ______ trouble.

　Is there any hope of ______the gold medal?

　We‘11 never forget ______ in New York last year.

　The two pilots decided to work _____ turn during this long flight.

　We’ve been informed ______.

　All applicable flight restrictions conditions must be coded in the ticket ______box.

　______that we can take B747 to our destination.