房地产价格通常有上下波动，在短期内可以看出其变动规律和发展趋势。 ( )
参考答案：错
Her mother ____ her stories patiently every evening when she was a little girl.
A．was used to tell
B．is used to telling
C．used to tell
D．used to telling
矿井瓦斯抽放的分类？
