WE_____PETER SINCE HE MOVED TO WORK IN OUR COMPANY

21. We_____Peter since he moved to work in our company.

A. had known B. knew

C. have known 22. "Where's David?" - "He's

A. been

C. gone 23. Where have you A. taken C. gone

? You are so brown. B. had D.been

D.know on holiday." B. had