根据汉语意思完成英语句子，每个空格填一个单词。

1．预订机票时，你必须出示身份证。

You must show your                    when you book an air ticket．

2．天气预报说本周末天气凉爽，去卧虎山水库钓鱼怎么样?

The weather report said it would be cool this weekend．                   going to Wohushan Reservoir to fish?

3．在解放军的帮助下，汶川人民已经克服了很多困难。

The people in Wenchuan                              a lot of difficulties with the help of the PLA．

4．在2008年奥运会开幕式上人们将看到一万张世界各地孩子的笑脸，因为我们将孩子的笑容视为世界光明未来的象征。

People will see ten thousand smiling faces from children all over the world at the opening ceremony of the 2008 Olympics．Because kids' smile                              a symbol of the bright future of the world．

Once upon time, a man taught some monkeys how to dance. The monkeys were    16   clever that they began to dance well very soon.
The man was happy. He     17   the monkeys up in special clothes and masks(面具). Then he took them to   18  party. He wanted people  19  his dancing monkeys.
The dancing monkeys were very popular at the party.   20  knew they were monkeys, and everyone enjoyed   21   them dance.
Then a naughty boy threw some bananas in front of the dancing monkeys.  22   the sight of the bananas,the monkeys forgot all about    23 . They tore off   24  masks and rushed over to the bananas and began to eat.
All the people at the party began to laugh. "They aren't dancers at all," said one person. "They are just monkeys! I guess not everything you see is   25   it appe- ars to be!"
"And," said another, "you should never try to be something you're not."

—Must we keep the window _______ all the time?
—No, you don’t have to.
A.opening   B.opened      C. open