• 5小题，每小题1分，共5分）

根据对话内容，从方框中选出恰当的句子补全对话，并在答题卡上将选定答案的字母标号涂黑。
A.What are you going to do this afternoon?
B.I think I will join in it.
C.Is that Jack speaking?
D.What is the volunteer activity about?
E.It is our duty to protect the environment.

A:  Hello !   71  
B:  This is Jack speaking. Who is that?
A:  This is Mary.   72
B:  I have no idea. And you ?
A:  I plan to organize a volunteer activity.
And I hope you can join us.[
B:  Uh…   73
A:  About protecting the environment.
B:  Sounds meaningful!  74
A:  You are so kind.
B:  Thanks! 75
A:  So it is.
76. ___________  77. ___________  78. ____________  79. ____________  80. ____________
五．71---75 C A D B E