Ответ:

Ex. 1:

1. I have never eaten sushi . Does it taste good?

2. My mum has already given my dad a blue shirt so I need to get him a different colour.

3. They have just sold the last one! We were five minutes too late.

4. I haven't made dinner yet. You can have a biscuit if you want.

5. I got this CD for my birthday. Have you ever heard anything by Mozart?

Ex. 2:

1. haven't finished my project yet. Can you help me?

2.  I've never read anything by Michael Morpurgo. Is he a good writer?

3.  We've already bought some fruit so you don't need to get any more. (correct)

4. Have they taken a taxi to the airport? They haven't got much time.

5.  Mum has just gone to the bank. She'll be back soon.