Điền vào chỗ trống từ thích hợp

1.whose book is this?-who.........
2.how much is that pen? -how much dose ......
3. how heavy are you?- how much .........
4. lam is mrs.hoa's son.- mrs.hoa.......... 
5. mr.ba is the owner of this house.- this house..........
giúp mình nhe (^    ^)