He’s been in China for two years. And he’s used to _______ in China.

Could you tell me __________? — Certainly. In half an hour.

Excuse me. I want to buy some stamps. Where can I find a post office?—I know _______ is not far from here. You can easily find _______.

These are _______books. Yours are over there .

_____ you call back tomorrow?–Of course I can.