-What were you doing when Jim called you?-I had

问题描述:

-What were you doing when Jim called you?-I had
-What were you doing when Jim called you?
-I had just finished my homework and____to have a rest
A.started
B.had started
C.have started
D.was starting
求详解

D为什么?我刚刚完成了我的家庭作业,并准备开始去休息。