It was ______the boy said he almost never did any exercise in the school______ the mother began to worry about his health.
You lent him $10,000 yesterday? You must ________ by him!
— How do you find the food here? — _______.
Elizabeth _______ a good plan of increasing sales at the meeting.
The woman ________ Mr. Brown is a professor from Beijing University.
The head teacher comes to the classroom ______ to see if the students are quiet.