二、根据句子意思,用括号中所给单词或短语的正确形式填空。
1. Let's help the 
homeless
(home)people. They have nowhere to live.
2. You must warn the child 
not to climb
(not climb)the tree. It's very dangerous.
3. Please get yourself ready as 
quickly
(quick)as possible. The bus is coming soon.
4. No pain, no gain. Without 
working
(work)hard, you will not pass the exam.
5. I often say to 
myself
(I), "What can I do if I am in trouble?"
6. Timmy was 
trapped
(trap)under the stones and bricks, so he shouted for help.
7. We've got no idea how 
to stay
(stay)alive in the wild.
8. Tom spent as little time as he could 
playing
(play)computer games.
9. The 
excited
(excite)people in the hall all stood up and cheered for the star.
10. When I found my poor dog under a tree, he was still 
alive
(live), but very weak.