1. We had a great time in Hong Kong last summer. (改为同义句)
    We _____ _____ in Hong Kong last summer.
2. To understand what he is saying is too difficult. (同义句)
    _____ _____ too difficult to understand what he is saying.
3. The children have never seen an Indian film, _____ _____? (完成反意疑问句)
4. He says the bus has already gone. (把主句变为一般过去时态)
    He _____ the bus _____ already gone.
5. Chinese people invented the abacus in the sixth century. (改为被动语态)
   The abacus _____ _____ in the sixth century _____ Chinese people.

1. we’re, relaxed, pretty time, not, in, about, Switzerland (连词成句)
                                                                                        
2. I don't know how I can get to the zoo.（改成简单句）
    I don't know how                to the zoo.
3. To understand what he is saying is too difficult. (改成同义句）
                          too difficult to understand what he is saying
4. The students should wear their uniforms at school.（对划线部分提问）
                                                                                
5. I need to look up the word in the dictionary．（一般疑问句）
              you         to look up the word in the dictionary?