–_____ did you work out the problem in such a short time? --With Mr. Li’s help.
—— Excuse me! Can you _____that the movie starts at 7:00 pm? —— Yes, I can.
The teacher wondered whether those ______at the back of the classroom could hear him.
Look! There’s no light on—Sara _____be at home.
Tracy wanted to be _____of her parents after graduation, and tried to live alone.
____by the horrible earthquake, many buildings needed to be repaired in the capital of Haiti.