8 If Rita had got some sleep last night, she wouldn't be exhausted today
9 If she weren't thin, she ưouldn't feel cold so much
10 If he polished his shoes, he would look smart
11 If he parked near his office, he would come by car

8. Rita is exhausted today because she couldn't sleep last night.
→ If Rita slept early, she wouldn't be exhausted today
9. She is very thin; maybe that's why she feels cold so much.
→ If she's fat, she won't feel cold anymore
0. He never polishes his shoes, so he never looks smart
→ If he...polished his shoes he would look very smart
11. He cannot park near his office; that's why he didn't come by car
→ If he..can park near his office he will go to work by car..
12. My house is guarded by two large dogs. That's the only reason it doesn't break into every night
If my house didn't have 2 dogs my house would be broken into every night