a. It's interesting to travel around the world.
→ Traveling around the world is interesting.
b. "I think Lan eats too much chocolate" said Peter.
→ Peter said that he thought Lan ate too much chocolate.
c. I always keep the window open. I want to enjoy fresh air. (using "so as to")
→ I always keep the window open so as to enjoy fresh air.
d. Could you please give me some information about the English course?
→Would you mind giving me some information about the English course?
