--- When did your father come back last night?--- He didn’t come back _______ he finished all the work.
Have you read the book _____ is about the moon?
Jack still came to school _____he was ill. A though B hotC. if D. so
We want to know _____to help them.
I want to watch the basketball match. Would you please ______ the TV?
Echo _____ for half a month. She’ll come hack in two months. A. left B leaveC. has left D. has been away