Please help me in english

In these sentences choose subject and object ( some sentences may have two objects, some sentences may have no object at all. )

1) My father owns a large fleet of cars.
2) A dictionary contains the meanings of words.
3) My brother teaches me Mathematics in the evening.
4) Nobody is absent today.
5) Who decorated my room so beautifully ?
6) How much time do you need ?
7) The principal sanctioned me two days’ leave.
8) At the back of the lawn stood a pipal tree.