21.-------Have you moved into the new classroom?
------ Not yet, the rooms______.
A. are being painted B. are painting
C. were being painted D. have been painted
22. _______ is clear that the number of students in junior middle schools in our country is less than that of last few years.
A. Which B. That C. As D. It
23. Fifty-six per cent of the work has been done but the rest ______ to be put off（推迟）until next Friday.
A. should B. are C. has D. have
