21.A nice word can make one feel warm in the winter,________an ill word can make one feel could in summer.
A.because B.while C.once D.or
22.I’m lucky to have got two tickets ________.Are you ________to go to the concert with me?
A.freely; free B.for free; freely C.freely; for free D.for free; free
23. ---Mary said Jack worked really hard.
---__________.
A.So does he and so does she B.So does he and so she does
C.So he does and so she does D.So he does and so does she
