________ you do, it’s useful to learn English.[ ]

There is no furniture in our new house. Maybe the wooden box can be used _____ a table. [ ]

She has _____ this car for nearly ten years.

Look! the car is going _____ the bridge.[ ]

Mr. Wang __________ be in the office. The light is still on.—No, he __________ be. Because he phoned me from the farm just now.