I/

1. Debris was scattered across the countryside by the strong winds last night. 

2. In the future, natural disasters will be predicted accurately with the help of technology. 

II/

1. Vy ate a big dinner, so Vy had a stomachache.

2. .If I were you, I would recycle these plastic carrier bags.

3.  Because I can’t swim, I’m not going/1 won’t go scuba diving with Terry.

4. Emma came first as a result of her hard work.

III/

1. Most people had left before the volcano erupted.

2. Yesterday, a terrible storm struck the rural area of Ha Giang province.

2, I'm not you, but I think you should recycle these plastic carries bags. (if)

--> If I were you, I would recycle these plastic carrier bags.

3, If I could swim, I would go scuba driving with Terry. (because)

-->I don't go scuba diving with Terry because I can't swim.

4, Emma came first because she worked hard.

-->Emma came first as a result of her hard work.