________very important for us to learn English because it is an international language now.  

My brother thinks           is difficult           TV programmes in English.

He found ____ very difficult to understand what the foreigner said.

根据所给的汉语提示，转换下列句型。
1. To be a doctor for animals is very rewarding. (改为同义句)   
    _____ _____ very rewarding to be a doctor for animals.
2. "I saw the film yesterday", she said to me. (改为间接引语)  
    She told me that she _____ _____ the film the day before.
3. Jack has been invited to study at Oxford University. (改为主动语态)  
    They _____ _____ Jack to study at Oxford University.
4. The bird died yesterday. Henry liked it very much. (改为同义句)  
    The bird _____ Henry _____ very much died yesterday.
5. You're not supposed to shake hands in India. (对画线部分提问)   
    _____ are you not supposed to _____ in India?

The doctor told him that ____ was necessary to take the medicine on time.        

He found            very difficult            the math problem.        

       not polite to make fun of people who are in trouble.        

根据所给的汉语提示，转换下列句型

I found        __not easy to learn English well.       

I think           important to learn English well.