请给分析一下英语题.要写出原因
3、I don’ t know whether Mother __________ me to Beijing next month.(take)
6、The boy asked his mother ________him go and play basketball.(let)
12、__________(be) your parents in Shanghai last year?
13、Mr. Yu _____________(teach) us maths since 1982.
给翻译一下.谢谢