Gạch chân lỗi sai và sửa lại cho đúng 48. Students from different fourteen schools participate in the competition. _________________________ 49. We’ll wait here until he will come back tomorrow. _________________________ 50. The new machine works much more fastly than the old one. _________________________ 52. It rained so hard for us to go camping. _________________________ 53. A friend of him got married to a Chinese girl last week . _________________________ 54. The wind started to blow and the rain became more heavily. _________________________ 55. I’m glad that the number of participants increase every week. _________________________ 56. They don't go to school on Sunday and I don't, neither. _________________________ 57. It’s a fact that go jogging is a good way to keep fit. _________________________ 58. I’d like to buy two dozens of pencils, please. _________________________ 59. Your birthday cake is twice bigger than mine. _________________________ 60. The more confident you are, the less mistakes you make. _________________________ 61. The roads in our city are more and more narrow.