D 38. You ___________ do the job if you didn’t speak Japanese fluently. A. couldn’t B. can’t C. won’t be able to D. needn’t 39. When I was young, I __________ go fishing with my father. A. was used to B. would C. may D. used to 40. You ________ take along some cash. The restaurant may not accept credit cards. A. has to B. had better C. can D. could 41. Your wedding ring is very precious. You ___________ lose it. A. must B. could C. needn’t D. mustn’t 42. “How old do you think Peter is?” - “I just looked at his driver’s license. He ______ 33.” A. might be B. may be C. must be D. should be 43. It ________ rain this evening. Why don’t you take an umbrella? A. had better B. might C. must D. could 44. You ________ forget to pay the rent tomorrow. The landlord is very strict about paying on time. A. don’t have to B. mustn’t C. couldn’t D. can’t 45. It’s a school rule. All the students _________ wear a uniform. A. have to B. might C. must D. need 46. Passengers _______ smoke until the signs have been switched off. A. mustn't B. can't C. needn't D. mightn't 47. We must obey the traffic laws. Otherwise, we __________ be punished. A. will B. might C. should D. need 48. This is the key. You _________ forget to take it with you when going out. A. should B. have to C. mustn’t D. needn’t 49. You _________ introduce me to Dr. Gray. We have already met. A. shouldn’t B. needn’t C. mustn’t D. couldn’t 50. “I have got a headache.” – “You _________ go to see the doctor.” A. may B. could C. should D. might