Điền giới từ 1. The price of electricity is going up _____ August. 2. They came to visit us _____ my birthday. 3. Did you have a good time _____ Christmas? 4. The children are really excited _____ their summer vacation. 5. We were very disappointed _____ the organization of the festival. 6. John missed a lot of lessons. He was ill _____ January to March. 7. Helen had said goodbye to everybody in the class _____ she left for the hometown. 8. My cat is very fond _____ fish. 9. I waited _____ 10 o’clock and then went home. 10. I can’t remember exactly when the accident happened. I think it was _____ nine and half past nine.

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