26. I____ at the office early because I always get stuck in the traffic jam in the morning.
A.mustn't be
B. must be
C. should't have been D. didn't need to be
27. You ____ take a raincoat. It might rain.
A. are supposed to B. had better
C. must
D. would rather
28. We need to buy some cooking oil and we have no cash here. We ____ use our credit card.
A. can
B. could
C. have
D. have got to
29. He'll share his money with us, but we _____ share with others, too.
A. needn't
B. don't have to C. can't
D. must
30. You _____ me before taking my pencil. I had Art class in the morning.
A. could ask
B. should have asked C. are not asking
D. may ask
31. He bought a new T-shirt but it was too small. He ____ a bigger size.
A. should have bought B. must buy
C. had to buy D. should buy
32. My daughter is in her room now. She will take an English exam tomorrow. She ____ at the moment.
A. should study B. must be studying C. can study
D. could study
33. I'm sorry. I am late. I ____ my wedding party.
A. should have joined B. must have joined
C. could joined
D. had to join
34. My nephew is five years old, but she _____ read and write fluently.
A. can
B. could
C. is able to
D. should
35. ____ you help me with the household chores, please? A. can
B. could
C. should
D. must
36. Our country _____ become a super power by 2025.
A.may
B. can
C. could
D. should
37. She ____ sell her home because she needs some money.
A.might B. may C. can
D. could
38. On the plane, you ___ wear a seat belt all the time.
A. need not
B. must not
C. can not
D. do not have to
39. Is your telephone all right now?____ you hear me again? A. may
B. can
C. will
D. could