7. You ____________ alcohol when you drive.
A. needn't drink
B. mustn't drink
C. shouldn't have drunk
D. won't have drunk
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8. I'm feeling sick. I ____________ so much chocolate.
A. can't have eaten
B. needn't have eaten
C. shouldn't have eaten
D. won'thave eaten
9. The price on this packet is wrong. It says $65 but it ___________ $50.
A. canbe
B. will be
C. shall be
D. shouldbe
10. He says he's 21 but he __________ older than 18.
A. need not be
B. shall not be
C. darenot be
D. can't be
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