根据短文后所给的任务，完成1～5小题。

（1）Russia is proud of its circus（马戏）performers．It has the oldest circus school in the world—Moscow Circus School．（2）Every year more than a thousand children from other countries want to enter this school．However，only about 70 of them are chosen．（3）less，the，old，be，must，eleven，students，years，than．They must be talented and good at sports as well．

Students at the Moscow Circus School learn a lot．Besides the same basic（基础）subjects as those in other schools，they have to learn four circus subjects．Those subjects sound fun，but they are difficult to learn．For example，it can take years of practice for a student to walk on the high wire．While learning and practicing，the students always wear safety belts．（4）So if they________ mistakes，they will not get hurt．

After seven years of study，（5）the students are supposed to leave school．The graduates usually work in the circuses and can make a lot of money．

任务1：请将（1）处的句子改成同义句。

1．Russia ______________ its circus performers．

任务2：请将（2）处的句子翻译成汉语。

2．__________________________________________

任务3：请将3）处的单词组合成一个完整的句子。

3．__________________________________________

任务4：在文中（4）处的空白处填上一个适当的单词，使句意完整。

4．So if they ______________ mistakes，they will not get hurt．

任务5：对（69）处的画线部分提问。

5．__________________________________________?