6．那时她靠在街上卖报纸谋生．

  She                          a                           by selling newspapers in the street in those days．

5．如果你上学迟到了，老师将不让你进去。（完成翻译句子；以下同）

                          you are late for school, the teacher                            let you in．

4．1 am not sure what I can buy for my mother．

  I am not sure what                          for my mother．

3． Work hard, or you will fall behind others．

                           you                       work hard，you will fall behind others．

2．I'm glad that my grandfather is healthy now．

  I'm glad that my grandfather is in                                                    now．

1．I won't be able to finish the housework without your help．（改为同义句，以下同）

  1 won't be able to finish the housework                         you                       help me．

20．―I'll go to the Modem Science Museum this weekend．

    ―                         ．Let's go together．

A．Good idea                                               B．1 won't go

    C．That's right                                              D．Sorry，I'm busy

19．It's important to find a good job，but                        ，we should know what we like to do．

A．in fact                 B．in the future          C．first of all              D．of course

18．―                  at 10┱00 o'clock yesterday?

    ―I  was chatting with my e-pel on the Interact．

A．What would you do                                 B．What did you do

    C．What are you doing                                    D．What were you doing

17．It's an important meeting．We                           get there on time．

    A．are able to    B．are in order to

    C．are supposed to D．are disappointed to