61. Water park is free for kids under 6 years old, so you ____ pay money for your son. A. have to B. mustn't C. should D. don't have to 62. You look totally exhausted. You ____ take a rest instead of working overtime. A. should B. ought C. must D. has better 63. Anyone ____ have a passport, even a visa when travelling all around the world. A. ought to B. must C. should D. has to 64. In the peak season, travellers ____ book their accommodation in advance. A. have to B. must C. should D. ought 65. My car broke down yesterday, so I ____ catch a taxi to the office. A. have to B. had better C. had to D. has to 66. We ____ eat as much fruit as possible in order to get enough vitamins for our bodies. A. had better B. should C. ought to D. All are correct 67. You ____ tell anyone what I've revealed to you. It's still a secret. A. mustn't B. had better not C. ought not to D. don't have to 68. If you still want to maintain this relationship, you ____ behave improperly like that. A. ought to not B. ought not to C. mustn't D. don't have to 69. When playing or swimming in the pool, children ____ be accompanied by their parents. A. should B. must C. don't have to D. have to 70. We ____ go to work by car. Sky train is a wise choice during rush hour. A. ought to B. mustn't C. shouldn't D. have to