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bngoc.nm
2 năm trước
Cho tam giác ABC cân tại A, đường cao BH và CK cắt nhau tại I. a) Cm AI vuông BC b) tam giác AKH cân c) HK// BC
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I. Find the mistakes in these sentences and correct them : 1.i will be attend an artificial intelligence course at 9a.m tomorrow -.................................................................................................................... 2. my mother said it is impolite to leave without saying goodbye -...................................................................................................................... 3.she needs to improve her interview technology to get the job -.................................................................................................................. 4.my parents always say i had to become a doctor -.................................................................................................................. 5. she promised to hand in her assignment tomorrow -.................................................................................................................... II. 1. just taking vitamin tablets will not turn a/an ( healthy ) .................... diet into a good one 2. I'd been waiting for twenty minutes and i was getting (patient )....................... 3. A ( zoology ) ................... is a scientist who studies zoology

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