Though we are not walking slowly, I still think that it won’t be _________ he _________up with us.

A．long before; catches

B．before long; catches

C．for long; caught

D．long until; will catch

社会产品的价值由C、V、M三部分构成，能够成为税收分配对象的是（）

A、M

B、C

C、V

D、三者都是