(2010·北京市通州区高三一模) 21. -When did accident happen ? -Let me see It was on very hot

（2010·北京市通州区高三一模）       21. —When did                accident happen ?

   —Let me see  It was on                   very hot afternoon in July so there was not much traffic in the street.

A. the : the       B. an :不填       C. an : the   D. the : a

试题答案

D