5. The little boy fell off his bike and i____________ his le

5. The little boy fell off his bike and i____________ his left knee.
6. The doctor said that his life was out of ___________(dangerous).
7. The whole society should pay attention to the road traffic _______(safe).
8. I quickly put the ________(burn) hand under cold _______(run) water.
9. The hill is _______(cover) with many trees.
10. At first we didn’t know how to make Tom happy. Then Dick _______
______ ____ (想出) an idea. He ____ (讲) a joke and it ____him _____(使他笑).