C8: 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. nonetheless C9: I have to be on time,_____my boss will be annoyed if I'm late. A. and B. nor C. but D. for C10: Linh wanted to make some pies but didn't have apples____,she decided to bake a cake. A. theredore B. in contrast C. namely D. so C11: My car broke down yesterday, so I _____ go to work by bus. A. had to B. must C. should D. could Giúp mk vs!