7. The date of his arrival is still _____ (未定).　　　　　　　　　　　 　　　　7____________

6.Your suggestion is of great _______(实用) value.　　　　　 　　　　　　　　6____________

5.The three biggest killers in the world are contaminated drinking water, poor _____ (卫生设施) and air pollution.

4. We’ll have a big celebration this coming ______ (十月).　　　　　　　 4____________

3. She has made great ______ ( 进步 ) in her studies this term.　　　　　 3____________

2. Do you know when the first computers was _______ (发明).　　　　　 2____________

1.One of the main themes of the summit was “ ______ (可持续性) development”.　 1____________

10.The _____ ( 正常 ) body temperature of man is around 36.5℃.　　　　　　　　　　　　　 10.____________

Keys: 1.opposite 　　2 stomachs　 　　3.breathe　 　　4.published　 　　5.collected

　　　 6 temples　 　　7.opinion　　　 8.emergency　 　　9.choose　 　10.normal 　

9. Will you help me _____ (选择)a new hat?　　　　　　　 　　　　　　　　　　　　　　　9.____________

8.Seconds count in_____ (紧急情况) and knowing what to do can mean the difference between life and death.　 　　　　　　　　8.____________