Answer:
1.the stranger is being talked to.
2.the old beggar is being laughed at.
3.he is being waited for.
4.is the house going to be built by the masons?
5.you are being waited by whom?
6.whom is being waited by you?
7.are his lessons not being learnt by him?
8.you are being helped by whose father?
9.the door is being knocked by whom?
10.the game is being played by my brother.
Step-by-step explanation: