=>

9. B -> had better : nên

10. A -> should (should V : nên làm gì)

11. C -> should : nên

12. A -> must : phải

13. B -> ought not to : không nên

14. B -> don't (don't have to : không phải)

15. C -> shouldn't : không nên

Mark the letter A, B, C, or D to indicate the underlined part that needs correction in each of the following questions.

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

→ had better: nên

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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

→shouldn,t: ko nên 

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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

→must : phải

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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

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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

→ought not to : không nên

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14. This competition is optional, so we not have to take part in it.

A. optional B. not C. have to D. it

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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

→ should : nên

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@chy31