1.They speak Spanish in Mexico.( 就画线部分提问)
  ______ _____ do they speak in Mexico?
2.More than 450 million people can speak English.( 就画线部分提问)
  _______ ______ people can speak English?
3.What do you mean by "book"( 改为同义句)
  What's _______ ______ _______ "book"?
4.Apples are my favourite.( 改为同义句)
  I ______ apples _____.
5.It means "hope".(就画线部分提问)
  ______ ______ it mean?
6.We still don't understand,_____ _____?(完成反意疑问句)