i am sad（ because my mother is illl)(括号部分提问) ying tian asked his teacher how he could play thying tian asked his teacher how he could play the violin well(改为直接引语）i should (do my homework)括号部分提问) i don't know what to do(改为含有宾语从句的复合句
问题描述：
i am sad（ because my mother is illl)(括号部分提问) ying tian asked his teacher how he could play th
ying tian asked his teacher how he could play the violin well(改为直接引语）
i should (do my homework)括号部分提问)
i don't know what to do(改为含有宾语从句的复合句
答