We had plenty of bread, so I _____a loaf.
A. mustn't have bought
B. didn't have to buy
C. needn't have bought
D. didn't need to buy
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“ May I use your bike?”“No, you _______. ”
A. mustn't
B. needn't
C. may not
D. can't
Peter ______ be in Paris because I saw him in town only an hour ago.
A. mustn't
B. isn't able to
C. can't
D. may not
The teacher orders that every student_______ to school on time.
A. goes
B. go
C. went
D. gone
But for his poverty, he_____more students living in the poverty-strickenareas to go to umversities.
A. has assisted
B. would have assisted
C. assist
D. will assist