No one _______ the building without the permission of the policeman.
| A．is leaving | B．will be leaving | C．has left | D．is to leave |
—Mary is very clear and studies very hard.
— she stands out in almost all her subjects that she learns.
| A．No doubt | B．No problem | C．No way | D．No wonder |
To the surprise of many people, in ten years the city’s population by 12%.
| A．gained | B．expanded | C．developed | D．spread |
Obviously, the book is for children aged between three and six.
| A．defended | B．supported | C．convinced | D．intended |
There is a(n) of 200 yuan for the person who returns the lost necklace to its owner.
| A．reward | B．prize | C．award | D．praise |
She is an excellent student in our class, and she always herself in her studies.
| A．hides | B．buries | C．covers | D．leaves |