B. Listen to the dialogue and choose the best answer to the question you hear(根据你所听到的对话和问题，选出最恰当的答案)（共8分）
7. A) Sunny B) Rainy
C) Cloudy D) Windy
8. A) 10 minutes B) 15minutes
C) 20 minutes D) 25minutes
9. A) Because there is someone in the house.
B) Because there is something wrong with it.
C) because the man forgot to turn it off when he left.
D) Because the man turned it on just now.
