... 3. Write how long they have been doing it.
1. John/dance/ since 2015.
2. Ray and Sid/fish/for 3 hours.
3. My mum/cook/all the morning.
4. My parents/build a cottage for 2 years.
5. I (work on the project) since December​

1. John has been dancing since 2015.

2. Ray and Sid have been fishing for 3 hours.

3. My mum has been cooking all morning.

4. My parents have been building a cottage for 2 years.

5. I have been working on the project since December.

Я так поняла это в Present Perfect Continuous

1.John has been dancing since 2015

2.Ray and Sid have been fishing for 3 hours

3.My mum has been cooking all the morning

4.My parents have been building a cottage for 2 years

5.I have been working on the project since December