Teenagers _______ allowed to drive in the street ．

Look! A book is on the floor. Whose is it?—It ______be Rick’s. It has his name on it.

The old lady has ____old house. There are many mice in _____old house.

A: How many students can you see in the reading room?B: _______________.

Yao Ming was born _____September 12, 1980.[ ]