58.她不得不请三天假。

She has to ask for                  .

57.从现在起，你不能玩电脑游戏了。

You can't play computer games                 

56.你知道网络失物招领吗？

Do you know                      ？

55.I like English because it is interesting.(对画线部分提问)

                 you like English?

54.These are her gloves.(改为一般疑问句)

                hergloves?

53.I take the bus to school.(改为同义句)

I go to school               .

52.This camera is Jack's.(改为同义句) 

This is               .

51.This is Mary's bag.(对画线部分提问) 

              is this?

50.This isn't her knife.      (she) is green.

49.You can use the eraser. It is       (me) .