III. Choose the word or phrase that best completes each sentence. 6. The little boy ______ away from the dog. A. runs B. climbs C. finds 7. You _________ thirsty if you don’t bring a bottle of water. A. get B. gets C. will get 8. You ______ make noise in the library. That’s the rule. A. should B. mustn’t C. shouldn’t 9. _________ up the tree quickly! A. Build B. Climb C. Pick 10. We _________ get up early in the morning. It’s a good idea. A. should B. must C. shouldn’t 11. If you _________ harder, you will pass the exam. A. will work B. work C. works 12. A(n) _________ diet contains lots of vegetables and fruits. A. unhealthy B. healthy C. boring 13. How _________ is your son? He’s 18 months old. A. old B. high C. fast 14. Charles Dicken was one of the greatest _________ in the English language. A. scientists B. players C. writers 15. My mom _____________ cook many healthy dishes. A. can’t B. can C. could