in britain today women __44% of the workforce,

题目

in britain today women __44% of the workforce,
In Britain today women__44% of the workforce,and nearly half the mothers with children are in paid work.
A.are making up B.will make up
C.make up D.are to make up
是说 make up 没有进行时态吗？

答案

C
组成应该不能用进行时