The key answer of exercise 2

a)

1. 's singing
2. 's taking
3. are standing; 're listening
4. 's walking; isn’t listening
5. 's sitting; 's reading
6. are chatting; aren’t watching
7. 's looking; 's waiting

b)

1. Jake
2. Megan
3. Paolo
4. Philip
5. Wesley
6. Jo
7. Dave
8. Roger
9. Zoe
10. Lisa
11. Kalila

c)

1. What instrument is Jake playing?
2. Who is Zoe talking to?
3. Where are Zoe and Paolo sitting?
4. How many bags are Jo and Dave carrying?
5. Who is Wesley taking a photo of?
6. Who is talking on the phone?
7. What is Megan reading?
8. Who is buying a bag?

d)

1. He's playing the guitar.
2. She's talking to Paolo.
3. They're sitting at a café / at a table / near Megan / next to Megan.
4. They're carrying three bags.
5. He's taking a photo of Jake.
6. Roger is talking on the / his phone.
7. She's reading a newspaper.
8. Kalila's buying a bag.