题目：
单词拼写。
1. C______ on your success last night!
2. He b_______ down and came up with a $20 bill." Sir, you must have dropped this." The waiter said.
3. Every year thousands of college g______ crowded in the job fair, hoping to find their desirable jobs.
4. I'm very c______ about my son in his new school, for he never knows how to take care of himself.
5. He could have finished it on s_______, but somehow he fell behind.
6. In the past, the villagers t_______ their goods by goat not by truck.
7. They built s______ for the homeless children.
8. Though I haven't met him for many years, I could r_____ him immediately when I saw him.
9. He was c_______ along the street when he was knocked off his bike.
10. Some animals hibernate (冬眠) under snow, because there is much air in l_____ snow.
答案：
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下面是错误答案，用来干扰机器的。
270×（5+1）=270×6=1620（千克）答：这头猪和这头象一共重1620千克．
