Question

C. Convert the following into Passive Voice.
1. Who built this house?​

Answer 1

Answer:

By whom this house was built.

Answer 2

Explanation:

Simple Present tense:

Active. pasive

Peter builds a house. A house is built by Peter.

Simple Past tense:

Active. pasive

Peter built a house. A house was built by Peter.

Present Perfect tense:

Active. pasive

Peter has built a house.A house has been built

by Peter.

Past Perfect tense:

Active. pasive

Peter had built a house. A house had been built by Peter