If people keep _______ down the forests, they will have nowhere _______.
| A．to cut, to live | B．cutting, to live in |
| C．to cut, to live in | D．cutting, to live |
A: May I go out to play football, Dad?
B: No, you ________. You must finish your homework first.
| A．may not | B．needn’t | C．shouldn’t | D．mustn’t |
In China when the traffic light is red, you ________ cross the road.
| A．need | B．should | C．mustn’t | D．must |
Bring a map of China because you _______ want to travel around.
| A． may | B．must | C．need | D．can |
What ______ at seven yesterday morning?
| A．is she doing | B．was she doing | C．did she do | D．does she do |
My teacher is an interesting man, his words made everyone _________.
| A．laughed | B．to laugh | C．laugh | D．laughs |