(Q).
Dialogue: W: What time does the movie begin? M: It starts at seven. W: What time is it now? M: About six forty-five. We'd better hurry up. Question: How much time is left before the movie begins? - 7 minutes. - 15 minutes. - 30 minutes.
(A).
15 minutes.

(Q).
Dialogue: F: Sorry, Mr. Li. I'm late. The traffic is bad. M: It doesn't matter. Question: Why is she late for school? - Because there is a lot of traffic. - Because she gets up late. - Because she is very busy.
(A).
Because there is a lot of traffic.

(Q).
Dialogue: W: My mother is working in the First High School. M: My mother too. Question: What's the man's mother? - A doctor. - A teacher. - A worker.
(A).
A teacher.