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cuongdo5823
2 năm trước
cho x -y = -5 . Tính P biết P = - ( x-y-z) + ( -z + y + x ) - ( x + y) giúp mik nhá
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PREPOSITIONS 1. Billions of cans are thrown ________ every year all over the world. A. up B. away C. in D. on 2. Why don’t you use public buses instead ________ motorbikes? A. of B. in C. off D. on 3. Don’t throw trash ________ the water ? A. onto B. in C. into D. on 4. Polluted water can directly do harm ________ people’s health . A. with B. to C. on D. for 5. If we use much pesticide ________ vegetables, the vegetables will become poisonous and inedible. A. on B. with C. to D. for 6. They have complained ______ local authorities about using dynamite to catch fish. A. with B. about C. to D. on 7. Many people are interested _______the products that save energy. A. with B. about C. in D. on 8. What can we do to spend less ________ lighting? A. about B. on C. in D. of 9. Pay the bill within 2 weeks or the electricity will be cut ________. A. up B. down C. in D. off 10. I’m looking ______ the gas bill. Have you thrown it ________ ? A. after / away B. at / out C. for / away D. for / out 11. Bob’s character is quite different _______ mine. A. to B. with C. from D. at 12. My friends come to stay ________ us ________ Christmas. A. with / in B. to / in C. with / at D. to / at

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