47. turn down an invitation拒绝邀请 48. take a trip去旅行 49. at the end of this month这个月末 50. look forward to盼望;期待 51. the opening of„ „„的开幕式/落成典礼 52. reply in writing书面回复 53. g
1. 旅游的好处和坏处,英语短语句子或作文都行,有中文翻译最好 There is no denying that travel plays a more and more vital role in our society. travel is capable of expanding our knowledge of geography, the comprehension