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2 năm trước
Cho tam giác ABC vuông tại A.Đường trung trực của cạnh AB cắt cạnh BC tại điểm O. Chứng minh: OA= OB=OC
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1)My wife Linda and I (1)................(travel) a lot since we retired. We (2)..............(visit) cousins in Australia,and we (3)...............(be) to new Zealand twice. We (4)...............:go) on safari in Africa. We (5)..............(be) to Europe a lot. Linda and I (6) ..............(spend) time in paris, Madrid, and several cities in Italy. We (7)...........(not,be) to Easter Europe yet, though. We hope to visit Prague and Budapest next year. My Sister Rose was born in the United States. However, she (8)...............(never, travel) outside the country -except once when she was very young. She (9)..............(be) to a lot of places in the U. S. She (10)..............(visit) most of the national parks:the Grand Canyon, Yellowstone,Yosemite,and so on. She been to all off the big cities, too.In fact, she (11)...........(live)in four different cities in the U. S:New York, Boston,Los Angeles, and San Francisco. I think she (12).............(see) more of her own country than most people. 2)Complete these sentences using :and, but,so,because. 1.She want to go to the cinema,.............. I don't like that film. 2.Mai play tennis........... Football. 3.I can't sleep,................ I'm going to drink a glass of hot milk. 4.She went to the disco,.......... She didn't dance 5.I study English I want to talk with foreigners. 6.She danced..............sang last night. 7.He doesn't play the guitar,............he plays the drum. 8.He is sad...............he saw an accident. 9.She didn't invited ,.............I didn't go to her birthday party. 10. She can draw well,.............she can't Cook.

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