Bonjour,
Réponse :
1. Look! The bus is coming.
2. Julia is teaching Spanish this term.
3. Carol is studying French right now.
4. The kids are singing a song.
5. We aren't surfing in the web. ( aren't = are not )
6. Tina is wearing a black dress.
7. My brothers are sitting on a bench.
8. Barbara is going to school.
9. Christine is travelling by plane.
10. Those cats are playing with a ball.
11. That bird is flying very high.
12. The mechanic is mending the cars.
13. My sister is doing some housework.
14. At the moment it is snowing.
15.-My mother is baking biscuits
16. The Harrison family is enjoying the football match.
17. Alice is preparing the party.
18. We are breaking anything.
19. Tom and Anne are behaving correctly.
20. My neighbour is planting some trees.
Explications :
PRESENT CONTINUOUS
am / are / is + BV-ing