79.(　　 ) About sailing, Brett knew a little.

根据对话内容，在每小题的空白处填入适当的话语，使对话意思完整。

Samuel：Chen Li , can I have a look at your copy of China Daily?

Chen Li：_________________________________________________(73).

Samuel：I want to have a look at what’s on this weekend. Let me see now.

Chen Li：Is there anything good on?

Samuel：“Purple Rain Storm” is giving a performance at the People’s Theatre..

______________________________________________(74)？

Chen Li：They’re a pop group formed by three girls. They’re said to be very good.

_____________________________________________(75)？

Samuel：7：30 pm._________________________ ______. (76)？

Chen Li：Yes，I’ll be free. I’d like to go.

Samuel：________________________________________(77).

I’11 meet you at the theatre at 7：15.

Chen Li：Good！See you then. Bye.

72. 假如每个人都为保护环境做出自己的贡献，这个世界将变得更加美丽。

The world will become much more beautiful if everyone ________ a contribution to _______ the environment.

71. 轮到你在会上发言了。

It’s __________、_________to speak in the meeting.

70. 我叔叔以前是个司机，而现在他是工程师。

My uncle________、_______ be a driver, but now he is an engineer.

69. 查一下你们是否都有飞机票。

___________、_____________ you’ve got the air tickets.

根据所给中文意思完成句子，每空只填一个词。

68. 董先生无论什么时候睡觉，总也睡不够。

Mr Dong doesn’t get enough sleep _______he________ to bed.