Ответ:
- Mary — she.
- A brother and father — they.
- Tom — he.
- Men — they.
- A cat — it.
- A schoolboy — he.
- A woman — she.
- A dog and a cat — they.
- My friend and I — we.
- An ape — it.
- My uncle — he.
- My aunt — she.
- Nick and Mike — they.
- A schoolgirl — she.
- An elephant — it.
- Grandfather — he.
- A woman — she.
- Grandmother — she.
- Birds — they.
- A lion — it.
