—Are Grace and Joe coming to “Happy Camp” by plane?
—I’m not sure. It is said that their father ________ drive them here.
| A．must | B．need | C．may | D．have to |
What ______ she usually _____ on weekends?
| A．did, do | B．do, do | C．does, do | D．did, do |
“______ do you exercise?” Three times a week.”
| A．How long | B．How often | C．How far | D．How many |
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 |