、—It’s getting dark earlier than before,isn’t it?  —Yes.I think so.I see ____ is on already.  A.the street’s light B.the light of the street   C.the streets’ light D.the street light为什么

问题描述:

、—It’s getting dark earlier than before,isn’t it?
  —Yes.I think so.I see ____ is on already.
  A.the street’s light B.the light of the street
  C.the streets’ light D.the street light
为什么

street light路灯、街灯.