1. Justin wants to buy 2 kilos of beef. (对划线部分提问) 
   How _______ beef ______ Justin want to buy?
2. It's necessary for you to study hard in the school. (同义句)
   _______ _______ study hard in the school.
3. The music is very nice. (改为感叹句)
   _______ _______ music it is!
4. Are these shoes Kitty's? (改为同义句)
   _______ these shoes ______ to Kitty?
5. Did he go to the cinema yesterday? (用next week改写)
   _______ he _______ to the cinema next week?