13. Melis obey the rules if she wants to stay with us. A. Would B. have to C. should D. is used to 14. You borrow it. • A. May B. must C. should D. might 15. Every love story__have a conflict. A. Ought to B. should C. has to D. have to 16. If you want to save your family from starvation, you marry him. A. Must B. should C. has to D. mustn't 17. We join the contest next week. A. Cannot B. may not. C. should not D. has to 18.1 speak English well A. Can B. might D. should D. ought 19. We don't __ say the world. A. have to B. has to C. mustn't D. might 20. You__answer the question right away. A. have to B. has to C. might D. shall not C. may​