They _________ on the program for almost one week before I joined them, and now we are still working on it as no good results have come out so far.
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.
They are discussing how to ____a plan to advertise their new product in the office.