改错 62. on→in 63. day和the之间插入when 64.demand→demanding 65. 去掉to 66 in 改为that来源：www.examda.com 67. writing→write 68.desirable→undesirable 69. begin→began 70 its→theirs 71.nation→national 翻译 72 followed my advice/suggestion, youwould not have been/put yourself in trouble. 73 watched her injured son being sent into the surgery. 74 were (have been) suggested / adviced not to go to that country / choose that country as their destination. 75 via/ with/ through email instead of telephone. 76 It was not until the deadline did he send out.