—Bob has gone to Califonia.—Oh, can you tell me when he ?
Having checked the doors were closed, and _______ all the lights were off, the boy opened the door to his bedroom.
—Where are we going for the National Day,the mountains or the sea?— Either will be fine with me.
You are driving too fast. Can you drive_________?
American is an ________ country. You can hear _______ every where.
Mary realized she ________.