Low-carbon lifestyle is of great benefit to improve the world environment.________can be enjoyed from it until you have a deep understanding of it,however.
12. He said he was not optimistic the future of that country.
11. The little boy many questions at me, leaving me embarrassed.
10. -----Can you attend the meeting tonight? -----No,the manager about something important.
9. It long before we the result of the experiment.
8. Look, it is cloudy now. I’m sure .