Question

A gentleman was looking … a place … a crowded train a) for, on b) for, in c) out, to d) at, by e) after, with

Answer 1

Ответ b)
Так как looking for -это фразовый глагол
In a crowded train -в поезде ,наполненном людьми

Answer 2

The correct answer is:

b) for, in

So the complete sentence would be: "A gentleman was looking for a place in a crowded train."