"...now I was by myself it looked very large".The word 'it' here refers to

He did not look after the rest of the flat because

After lunch,I felt at a loose end and roamed about the little flat.It suited us well when mother was with me,but now I was by myself it was too large and I'd moved the dining room table into my bed room.That was now the only room I used,it had all the furniture I needed,a brass bedstead,a dressing table,some cane chairs whose seats were more or less caved in,a wardrobe with  a tarnished mirror.The rest of the flat was never used,so I didn't trouble to look after it.

The flat did not really suit him any more because

When the author says 'all would be well' he says

The time available to the author for shooting the tigress was

The author found it difficult to decide the question because