Teenagers shouldn’t be _______ from school although they don’t do well in their studies. 

The beautiful girl stood there until the train ___________.

He came to my class every week, but his attitude ________ he was not really interested in the subject. 

The young man, who had rushed into the fire to save the old man, _____ rewarding.

The telephone _____ three times in the last hour, and each time it _____ for my sister.