The passive form of `who has broken the glass’? is-
by who have the glass been broken?
by whom have the glass been broken?
by whom has the glass been broken?
whom has the glass been broken?
সঠিক উত্তর:
by whom has the glass been broken?
ব্যাখ্যা ও নোট:
Who থাকলে By whom এবং singular object (the glass) থাকায় has + been + V3.