B.How many persons have died in Iraq

　　　　C.How to protect our environment

　　　　D.Why is our Chinese team be able to beat Korea

　　　　9.Do you know___________?(谁正在唱歌)

　　　　10.Do you know___________?(她正在和谁谈话)

　　　　11.Do you know___________?(昨天发生了什么事)

　　　　The keys: 1 A.2 if ,comes.3D. 4 C. 5 D. 6 D. 7 C. 8 B

　　　　9 who is singing

　　　　10 who she is talking with

　　　　11 what happened yesterday