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nhyy281
2 năm trước
Chứng minh rằng nếu a + b + c = 0 thì:A=[(a-b)/c+(b-c)/a+(c-a)/b][c/(a-b)+a/(b-c)+b/(c-a)] mk cần gấp
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Complete the sentences, using although, despite, in spite of, however, nevertheless. Sometimes, two answers are possible. 1. ________________ it was raining heavily, he went out without a raincoat. 2. My father is very busy. ________________, he is always willing to give a hand with the housework. 3. Some English words have the same pronunciation ________________ they are spelled differently, for example, dear and deer. 4. I was cold and wet. ____________________, Bob put on his swimming suit and went to the beach. 5. I think I did OK in my speech last night ________________ I’d had almost no sleep for 24 hours. 6. Carol arrived at the meeting _______________ I asked her not to be there. 7. The sky was grey and cloudy. _________________, we went to the beach. 8. It looks like they’re going to succeed _______________ their present difficulties. 9. _________________ there was no electricity, I was able to read because I had a candle. 10._________________ I heard the telephone ring, I didn’t answer it.

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