61. is it yours? 这是你的吗? 62. that's neat. 这很好 63. are you sure? 你肯定吗? 64. do l have to 非做不可吗? 65. he is my age. 他和我同岁 66. here you are. 给你 67. no one knows . 没有人知道 68. take it easy. 别紧张 69. what a pity太遗憾了! too bad/too sad 70. any thing else? 还要别的吗?