B: It's a private matter.

A: Why didn't you tell me?

B: I was going to. I was waiting for the right moment.

A: Why don't you get a job?

B: I've been thinking about opening a fast-food restaurant.

A: I don't understand why you walked out.

B: Because I'm disgusted with the speech.

A: How was it that you couldn't get here on time?

B: There was a terrible traffic jam.

A: How come you're here so early?

B:  Because I hate to be jammed in the train.

A: Why can't you stick with your present job?

B: They don't pay me enough.

A: What was the cause of that car wreck?

B: The driver seems to have been drunk.