I want to know what my father ___(was doing/did) when he was

I want to know what my father ___(was doing/did) when he was I did not know what to expect when I was going to China I was doing my homework when he is ___ (clean) the house My father began to learn English when he was in ___. I didn't know what--------then.A.he was doing B.was he doing I was doing my homework when he came in.(对I was doing my hom I was ____ surprised ____ I didn't know what to do when I he I 【was doing】谓语【 my homework】宾语【 when my father came】状语 when 1.My father was ___ the school basketball team when he was y I 【was doing】谓语【 my homework】宾语【 when my father came】状语 I wi when he was in trouble,i was alway doing what i could()him.A I was doing my homework 【when my father came 】状语 这里里面有一个从句 但