- I wonder Mr. Black changed his mind to take part in the movement. - After he l

 — I wonder _____ Mr. Black changedhis mind to take part in the movement.

— After he listened to the speech by Mr.King.

A. when was it that    B. when was that it   C. when that was           D.when it was that

试题答案

【答案】

D

【解析】