Question

sir mohal lal looked at himself in the mirror of a first class waiting room at the railway station chenge in to negative​

Answer 1

Answer:

sir mohan lal did not look at himself in the mirror in first class waiting room at railway station

Explanation:

in negative sentence (not or did not) always comes.

Answer 2

Answer:

Just add did not.

Explanation:

Sir Mohan Lal did not look at himself in the mirror of a first-class waiting room at the railway station.