A. Language Functions 1. Finish the following dialogue: Nora is talking to Toka about global warming. Nora : Hi, Toka. What're you doing? Toka : Hi, Nora. (1) Nora : A book! (2) ? Toka : It's about global warming. It's a serious problem. Nora . : (3) ? Toka : It's caused by greenhouse gases. Nora : Greenhouse gases? Are they dangerous? Toka (4)....... .They may cause death. Trees are important. Nora : How can we reduce greenhouse gases? Toka :(5).​