помогите плиз................

1 the Smiths'
2 is having
3 was demonstrated
4 pianos
5 is

1. Will you come to the Smiths party today?
2. Tom is having breakfast at the moment.
3. A new computer game demonstrated to children yesterday.
4. I can't buy two pianos! It is very expensive.
5. Miss Brown said that Donald's mother is 50 years old.