this kind of pen was invented (by a boy named tom)对括号部分提问() this kind of pen ()()()?
问题描述:
this kind of pen was invented (by a boy named tom)
对括号部分提问
() this kind of pen ()()()?
答
Who was invented by
答
Who was this kind of pen invented by?
答
By whom was this kind of pen invented?
(Whom) this kind of pen (was)(invented)(by)?