20. - My name is Katherine. Shall I spell it for you?

　 -_______ .

A. Not at all　 B. Nice to meet you　 C. Do as you please　 D. If you don’t mind

19. One of the most interesting places in Beijing _______the foreigners want to visit is the Great Wall.

A. which　　 　　 B. that 　　　　　　　　 C. what　　 　　　　　 D. where