Passive Voice. Tenses

Write the necessary part of the given sentence in the Passive Voice:

My friend gives me presents every year.

Presents ___ to me by my friend every year.

Write the necessary part of the given sentence in the Passive Voice:

I saw a cat yesterday.

The cat ___ by me yesterday.

Write the necessary part of the given sentence in the Passive Voice:

Mum came home when my granny and I were baking a cake.

Mum came home when a cake ___ by my granny and me.

Write the necessary part of the given sentence in the Passive Voice:

The pupils are writing an exercise at the moment.

An exercise ___ by the pupils at the moment.

Write the necessary part of the given sentence in the Passive Voice:

My cousin will meet us tomorrow in Saint Petersburg.

___ by my cousin tomorrow in Saint Petersburg.

Write the necessary part of the given sentence in the Passive Voice:

Carol has bought nice things this week.

Nice things ___ by Carol this week.

Write the necessary part of the given sentence in the Passive Voice:

When Peter rang Mary had already finished her homework.

When Peter rang Mary's homework ___.