III. GRAMMAR Choose the word or phrase that best completes each sentence below. 15. The house was destroyed in the fire, _________ fortunately, the whole family was saved. A. and B. however C. but D. so 16. Our family love Thai food, _________ we order it once a week. A. so B. and C. for D. because 17. Jill should show up on time, __________, he can’t enter. A. however B. otherwise C. even though D. nevertheless 18. We should be careful not to break anything during Tet holiday _________ it is believed to bring bad luck. A. because B. yet C. so D. nevertheless 19. I have to be on time, ________ my boss will be annoyed if I’m late. A. and B. nor C. but D. for 20. I’m afraid of heights, _________ I appreciate the view from the top of this building. A. and B. nor C. yet D. for