Look at these pictures carefully, and decide which sentence is right? ______.
| A．Milk is cheaper than coke. | B．Milk is the most expensive. |
| C．Orange juice has the same price as water. | D．Coke is more expensive than orange juice. |
________is helpful to our environment.
| A．Cutting down trees | B．To protect animals |
| C．Not riding in cars | D．Recycle paper |
We ________ cross the street until the traffic lights turn green.
| A．mustn't | B．needn't | C．should | D．might |
You look too tired. Why not ________ a rest?
| A．stop having | B．to stop having | C．stop to have | D．to stop to have |
Let's ________ the TV to watch the news program.
| A．turn on | B．turn down | C．turn up | D．turn off |
—Is the wine made ________ wheat?—Yes, it is made ________ China.
| A．of; in | B．from; in | C．from; by | D．of; as |