помагите пожалуйста с номером 3,4 Даю 15 баллов! заранее спасибо!

Ex.3

1. a - is having; b - doesn't have
2. a - Do you think; b - am thinking
3. a - looks b - is looking
4. a - are being; b - is
5. a - tastes; b - am just tasting

Ex.4

1. am working
2. opens
3. know
4. pay
5. Do you like
6. am having
7. are being
8. am wearing
9. always tells
10. doesn't seem