词形变化：1."9.11"caused a great horror in the world,and the ____

词形变化：
1."9.11"caused a great horror in the world,and the ____(murder)are still at large.
2.Have the Olympic Games_____(ending)?
3.His face is ____(face)the south of the river to practice singing.
4.I pulled the handle as_____(hard)as I could.
5.Tom is the _____(strong)of the two young men.
6.We should speak to them even ______(polite).