The police are________to conclude that the cause of fire had been a cigarette end.

How bright the sun is!—You’d better wear your dark glasses to_____ your eyes from it

The movie once________a whole generation ofpeople.They proved to be of much________in the education of people.

The reason for his success is ______ he worked very hard.

The manager says he needs an assistant that he can________to deal with the problems that may occur inhis absence. [ ]