按要求完成下面的句子，每空一词
I study English by working with friends．(对画线部分提问)
________ ________you study English？
I have learned English for three years．(对画线部分提问)
________ ________ ________you learned English？
She watches English movies sometimes．(对画线部分提问)
________ ________ ________she watch English movies？