When the teacher raised the question, no one in the classroom could give the answer _____ it. [ ]

Tom, could you ________ your CD player a little bit? Dad is sleeping now.

I’m Mr. Brown from the police station. Could you tell me _____the butcher foundmoving slowly across the square?

YaoMingisafamousbasketballstar_______isplayingintheNBA.

Scientists say it may be five or six years ______ it is possible to test this medicine on human patients.