Đáp án:

1)People use money in order to buy things they need.

2)Banks are developed in order to keep people's money safe.

3)Mr.Brown is going to the bank so that he can borrow some money.

4)Alice borrowed an eraser so that he could erase a mistake in his composition.

5)I need to buy some laundry detergent in order to wash my clothes.

6)I moved to the front of my room so that I could see better.

7)I came to this school in order to learn English.

8)He gave her the key so that she could open the door.

9)Mary took her brother to school so that he could learn English.

10)Please arrive early so that we can start the meeting on time.

11)He wrote to David of his interest in science so that he could ask for work.

12)Kathy built a high wall round her garden so that the fruits not to be stolen.