（用所给动词的适当形式填空）I'm frightened of __________ (travel) by plane．

（词形变换） danger(形容词)

（词形变换） love(形容词)

（词形变换） quiet(副词)

（词形变换） careful(副词)

(用所给词的适当形式填空) He will meet a friend of __________ (he) tomorrow.

(用所给词的适当形式填空) The man came into the room __________ (quiet) and did some reading.

(用所给词的适当形式填空) The story is __________ (fun)，it makes us very happy.

(用所给词的适当形式填空) It is __________ (noise) outside．Please close the door.

(用所给词的适当形式填空) The umbrella behind the door is my __________ (sister).