She raised her finger to her lips as _________ for silence. 

The _____ of his clothes indicated too clearly that he had been playing football.

(2014·德州模拟)You’d better take into account your own________and weaknesses before choosing a major.

To the sea captain's surprise, he found that ________ travel could also be quite pleasant.

His wife is constantly finding ____with him,which makes him very angry.