21. ____ walk is expected to last all day, so bring ____ packed lunch.
A. A; a B. The; 不填 C. The; a D. A; 不填
22. Could I speak to ____ is in charge of International Sales, please?
A. anyone B. someone C. whoever D. no matter who
23. –Have you been wasting time on computer games again?
-- _______. I’ve been studying a lot and I need a break.
A. No way B. Not really C. I don’t agree D. I couldn’t agree more
