句型转换。

1. She can find something strange on the mountain. (改为否定句)  

    She                        find                      strange on the mountain.

2. This park used to be very quiet. (改为一般疑问句)   

                            this park                       to be very quiet?

3. The French book must be Gina's. (改为否定句)

    The French book                       be Gina's.

4. I'm really anxious because I have a test on algebra tomorrow. (对画线部分提问)  

                                                           you really anxious?

5. I see three monkeys escape from the cage. (对画线部分提问)

                                                     monkeys do you see escape from the cage.

汉字是世界上历史最（）的文字之一，它的历史可追溯到（）年前。距今有（）年的甲骨文，已经是一种相当成熟的文字了。