Question

as soon as I heard a knock at the door bell,I open the door using no sooner

Answer 1

no sooner did i hear a knock at the door bell than i opened the door

Answer 2

Answer :

This question is based on sentence transformation.

The given sentence 'As soon as I heard a knock at the door bell, I open the door.' can be transformed using 'No sooner' in the beginning in the following manner :

No sooner had I heard a knock at the door bell, I opened the door.

Here, the given sentence is to be transformed by using the word/s given in brackets and without changing the meaning.