I Mr. Green while I along the street last Sunday.
- A.met; walked
- B.was meeting; walked
- C.met; was walking
- D.was meeting; was walking
答案
正确答案:C
知识点:时态

当While引导时间状语从句时,强调主句的动作与从句的动作同时发生,或主句的动作发生在从句的动作过程中,主句中meet不是延续性动词故属于第二种情况。本句句意为:上周日当我在街上散步的时候遇见了格林先生。所以答案选C。

略
