He has two sons. One is a doctor,_______is a policeman.

I’m so busy. If I ______ time, I ______ have agood rest.

Hi, Vera, have you checked the account yet?—- Certainly, I ______ it five times even though you told me to do it twice

____ from endless homework on weekends, the students now find their own activities, such as taking a ride together to watch the sunrise

His lost eyesight was by his ever sharpening sense of hearing.