英语:unit2 wish you were here-welcome学案(牛津译林版必修2)
英语:unit2 wish you were here-welcome学案(牛津译林版必修2)第5页

  D. they are not well planted by people

19. The Chinese government is planting trees around _______.

A. the deserts B. China

C. Beijing D. the north of China.

20. The expansion of desert land _______.

  A. will definitely be controlled by 2010

  B. won't be controlled by 2010

  C. should be controlled by 2010

  D. must be controlled by 2010