TÌM LỖI SAI 16.Scientists must have to discover an alternative source of energy before oil runs out. * 5 điểm A.must have to B.alternative source C.before D.runs out 17.To have a strong body and stay healthily, you should exercise regularly. * 5 điểm A.a strong body B.healthily C.exercise D.regularly 18. You should eat less vegetables because they are good for you. * 5 điểm A. eat B. less C. because D. for 19. He went to school with his friend, did he? * 5 điểm A. went B. to C. with D. did 20. Solar energy will used more in the future. * 5 điểm A. solar B. will C. used D. more

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