III. Supply the correct tense or form of the verbs 1. Don’t stay up too late or you (be) tired. 2. Elderly people (give) teenagers good advice. 3. Don’t forget (clean) your teeth after meals. 4. Of all my classmates. Minh’s the best at (learn) English. 5. It’s half past one now. We (study) Electrics in the classroom. At a quarter to two we (have) a short break. 6. When my father (be) young, he (take) morning exercises regularly. 7. You should (see) the dentist when you have a toothache. 8. One of the biggest library in the world (be) the Library of the Congress.

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