Verified answer

1

He was sitting

I was doing

He had finished

Australia is... (названия континентов используются без артикля)

The UK... (всегда с опред. артиклем, т.е. в названии страны есть нарицат. сущ. kingdom)

... make me work hard

2

1) If I were you, I would visit...

2) laid, wouldn't be

3) would behave, took (или would have behaved, had taken)

3

1) She was surprised that somebody had stolen her bag in the shop.

2) He said he couldn't move the piano alone.

3) The student apologized for coming so late.

4

1) ambitious

2) independence

3) exploration