8. I that if I were you.
will not do
would not do
9. If these walls thicker, we wouldn't hear the neighbors. *
would be
were
10. If I were a millionaire, a mansion. *
I'd buy
I'm going to buy
11. If I knew his address, I contact him. *
would
could
12. If he tomatoes, he would eat the salad. *
liked
likes
13. I travel on my own if I didn't speak English. *
wouldn't
would be
14. If we enough room in our house, you could stay with us. *
has
had
15. I wouldn't go to bed early if I work so hard. *
didn't
hasn't