Hello， haven' t seen you for a long time! You look fine!

________________（　　）

A．Oh，noB．ThanksC．GreatD．Not at all

How is the young man？

_____________．（　　）

A．He's twentyB．He's much better

C．He's a doctorD．He's Mr Smith

It's very kind of you to help me． Thank you very much．

______．（　　）

A．Thank you

B．Don't thank me

C．Sorry to help you very little

D．You are welcome

My sister______ the piano very well， but she hasn't had time to play recently．（　　）

A．will playB．has playedC．playedD．plays

I still don' t know what____ while I was away from home．

You'll know it all some day， l believe．（　　）

A．had happenedB．would happen

C．has happenedD．happened