Question

(supply correct preposition:)

1. sitting___ the floor is not very comfortable.

2. I wrote___ my father a letter___ last week.​

Answer 1

1. Sitting on the floor is not very comfortable.

2. I wrote my father a letter last week.​ (The second sentence doesn't need any prepositions.

The use of prepositions in the English grammar:

• Prepositions are vital to writing a correct sentence.
• There are almost 150 prepositions in English grammar.
• Using a wrong preposition can change the meaning of the sentence.
• Some prepositions are: on, into, above, at, below, upon, of, off, etc.