Cho tam giác vuông ABC , góc A = 90 độ, đường cao AH. Chứng minh: a) Tam giác ABC đồng dạng với tam giác HBA b) tam giác ABC đồng dạng với tam giác HAC

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III. Complete the sentences, use the correct form of the words in the brackets. (10 points) 1. Would you mind if I (smoke)_______? 2. Surface mail is much (cheap)_______ than airmail. 3. He (live)_______ in this city since 2000. 4. The man (sit)______________________ next to me was very nervous. 5. The children (play)______________________ when It started to rain. 6. We(learn)__________________ French grammar at the moment. 7. It is five days sine you( give)………………. me some information 8. Mr. Hung told me (tell)_______ him the truth. 9. My father ( read) __________________ that book for a week. 10.By the time you (come)_____________ here, You (ask) ____________your father. IV. Underline and correct the mistake in the sentences.(20 points) 1. They didn't let me to go. ………………….. ………………. 2. When John is four, he came to London with his parents. ………………….. ………………. 3. How long have you living here? ………………….. ………………. 4. They are going to school by foot. ………………….. ………………. 5. Do you mind if I smoking in the room? ………………….. ………………. 6. His garden isn't as large than mine. ………………….. ………………. 7. We haven't talked to your sister since a long time. ………………….. ………………. 8. There are much than eighty stores in the mall. ………………….. ………………. 9. The toys keeping in the box are worth 30 dollars. ………………….. ………………. 10. This school is different mine. ………………….. ………………. help meeeee