9. If you want to get a higher mark in the next test, you have better put more effort into vocabulary. A. to get B. have better C. more D. into 10. We shouldn't make an appointment with this doctor. You can see him whenever you want. A. shouldn't B. with C. can D. want 11. Look at the sky, it is going to rain. Thus, you must bring along a raincoat. A. is going to B. thus C. must D. along 12. I ought to go home now because I don't want to walk in the dark. A. ought to B. because C. to walk D. dark 13. As our teacher said yesterday, we ought to not worry about the mid-term test. Take it easy. A. As B. ought to not C. about D. Take 14. This competition is optional, so we not have to take part in it. A. optional B. not C. have to D. it 15. Despite having a little chance to win, you should give up your dream of becoming a star. A. Despite B. a little C. should D. of