Stress can be extremely damaging to your health. Exercise, __________, can reduce its effects.

We don’t have to keep these old chairs any more. ________, they are falling apart（支离破碎）.

—Are you going to Dalian by air?—No, the tickets are ____expensive for me. 

We should ________ adjust ourselves to the development of our society.

As it was almost time for the flight, all the passengers got ______ the plane.