Question

Open the door _____ this key.......fill with correct preposition

Answer 1

Open the door by this key.

What is a preposition?

• In the English language, we describe a preposition as a word or group of words which do not have a meaning of their own but play an important role in giving a sentence its meaning.
• Preposition shows relationship between different words of a sentence.
• Example of preposition includes to, by, for, from, along, across etc.