_______ medical issues, we also have to face moral and legal issues when cloning human beings.
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 .