we use did for making negative sentence in past as well as to make Verble in in simple past. also did show action completed in past. we use were in past continuous as well as we can make questions about was any action going on? like were they talking with him?

if you don't mind some people say that you have to take one topic or subject and prepare well and then try to speak before your family /friends only then you will be able to speak fluent English. our fear of talking Eng will be less.