一、根据要求写出相应的短语。
1. 一位智者 2. 向某人挑战某事
3. 思考了一会儿 4. 数量翻倍
5. 剩余的 6. 毫不犹豫
7. 命令某人做某事 8. 意识到问题
9. 向某人寻找建议 10. 听从某人的建议

【学以致用】根据句意从第一大题选择适当的短语并用其正确形式填空，补全句子。
11. I had to make important decisions that would affect me for ______.
12. She went to a wise woman in the village, explained her situation and ______.
13. I must ______, or it won't be enough.
14. He accepted the job offer ______.
15. I ______, so I started to change my method.

二、根据汉语提示补全句子，每空一词。
16. 在哪可以查航空时刻表？Where can I check the ______ ______?
17. 当我说我游泳游得好时，她向我提出挑战一决高低。When I said I was a good swimmer, she ______ ______ ______a race.
18. 也许你仔细考虑之后会改变主意。Maybe you'll change your mind ______ ______ ______ ______.
19. 他命令军队无论如何也要夺取那座城市。He ______ the army ______ ______ the city at any cost.
20. 现在，我们有足够的时间做运动了。Now, we ______ ______ ______ to do sports.

三、课文语法填空。
Long, long ago, there lived a king in India. He was good at (1) ______ (play) chess. One day a wise old man visited him in the palace. The king challenged the man (2) ______ a game. Before the game, he told the man that he could give any prize (3) ______ the man won the game. But the old man would like one grain of rice for the first square of the chessboard, two for the (4) ______ (two), four for the third, and then double the amount for the rest of the (5) ______ (square). The king was surprised. He asked the man to choose gold or silver instead (6) ______ the rice. Once again, the man refused.
They spent a long time (7) ______ (play) the game. Finally, the old man (8) ______ (win). So the king had to order his men (9) ______ (collect) a bag of rice. The king soon realized it was difficult for him to fill all the squares even if he gave the old man all the rice in the country.
(10) ______ wise the old man was!