1.She enjoys listening to that programme because it's interesting.(对划线部分提问）
划线部分为：because it's interesting

2.My father gave me my fist violin eight years ago.(对划线部分提问）
划线部分为：eight years ago

3.I'm giving an interview on Starsearch.(改成现在完成时）

4.There is a concert at Radio Beijing.(改成一般将来时）