GIÚP MIK VỚI!!! ĐANG GẤP 11. Bell demonstrated his invention to the public at countless __________________ (exhibit) 12. Turn off the lights when we are out to save _______________________. (electric) 13. Michael Faraday made a lot of _________________ in the field of electricity. (invent) 14. I can't move this piano without your _______________________. (assist) 15. They get two ____________________ of mail a day. (deliver) 16. One of the _________________________ was come from France. (demonstrate) 17. He broke the vase because of his ____________________. (care) 18. He was a talented ___________________ when he was young. (music) 19. Her main _______________________ in life are music and painting. (interest) 20. I think we’re all in ____________________ that something must be done about the problem. (agree)

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