Do you know ________ her mobile phone? — No, I think it cost her around 4000 yuan.

Your English is good.—Thank you. I _______ it for three years.

The manager promised to keep me_______ how our business was going on.

Did the actor live alone in his house? —Yes. He has a wife and two children. But ____ of them lives with him.

My little brother can play ____ soccer and I can play ____ piano.