二、单项填空(共15小题,计15分)
选择最佳答案。
16. China is _____ Asian country, while the UK is _____ European country.
A.a; a B. an; aC. an; anD. a; an
17. ---- How do you tell him about the news?
---- _______sending e-mails.
A. For B. By C. In D. With