. In the years , the city government will take effective measures to bring the price of the house under control.
| A．following | B．followed | C．follow | D．to follow |
—Must I return the book tomorrow?
—No, you ________.You can keep it for three days.
| A．mustn't | B．needn't | C．can't | D．may not |
The Olympic Games is held ________.
| A．each four years | B．every four years | C．each four year | D．every four year |
Hainan is a very good island.It's the second ________ island in China.
| A．largest | B．large | C．larger | D．most large |
The accident happened ________ a cold winter morning.
| A．in | B．at | C．of | D．on |
—________ fine weather it is today!
—Let's go for a picnic.
| A．What | B．How | C．What a | D．How a |