21. --- Hi. Haven't we met before? You look so familiar!
--- Yeah. We met on ________ campus last week and you asked the same question. You
seem to be terrible with ________ names.
A. the; the B. the; 不填 C. 不填; the D. 不填; 不填
22. I’m working this evening because I am ．schedule with my work
A．behind B．beyond C．over D．on
