Exercise 1: Circle the best choice, A or B. (Khoanh tròn lựa chọn đúng nhất, A hoặc B)

1. Trees are being planted by the road side so as to reduce / in order toreducing traffic noise.

​       A​B

2. They were talking in whispers so that / so as to nobody could hear bottles. 

​A​B

3. My mother needs a tin opener to open  / so that opening the bottles. 

​A​        B

4. Advice is given so that / in order to students can choose the best course.

​A​   B

5. You may put your money in a small coin bank so that / in order to keep it safe 

​A​    B

6. We wrote Katie’s name on the calendar so as not to / so that not forget her birthday.

​   A​            B

7. She stayed at work late in order to / so that she could complete the report. 

​A​       B

8. I need some new clothes I haven’t got anything nice to wear / so that wear. 

​         A​   B

9. He turned on the radio in order to listen / so that to listen to the news.

​A​B

10. The school boys are in a hurry not to / in order not to miss their school bus.

​A​     B