III. Finish the second sentence so that it has a similar meaning to first one.
(Hoàn thành câu thứ hai để nó có nghĩa tương tự như câu thứ nhất)
1. I don't know anything about her background, so I can't tell you.
\(\rightarrow\) If I
2. I wasn't hungry, so I didn't feel like eating.
\(\rightarrow\) If I
3. She's too shy; that's why she doesn't have many friends.
\(\rightarrow\) If she
4. They were able to buy the house only because their parents lent them the money.
\(\rightarrow\) If their parents
5. People use so many cars in the city; that's why there's so much pollution.
\(\rightarrow\) If people
6. I remembered Susan's birthday only because you reminded me about it.
\(\rightarrow\) If you
7. The car in front stopped so suddenly, so I crashed into its back.
\(\rightarrow\) If the car in front