【C3】
A. now and then
B. over and over
C. up and down
D. here and there
【C4】
A. from mouth to mouth
B. from door to door
C. from the masses to the masses
D. from side to side
The old gendeman never fails to help______is in need of his help.
A. who
B. whoever
C. one
D. whomever
【C2】
A. anything
B. another
C. other
D. others