she sings for two hours every day.对for two hours 提问
问题描述：
she sings for two hours every day.对for two hours 提问
答
spends dancing spends ；dancing 。 SHE SPENDS TWO HOURS A DAY DANCING. spends .dancing
答
How long does she sing every day?
答
How long dose she sing every day?
答
How often does she sing every day?
how often 多久一次，用于提问频度副词