Exercice 2 :
a) What's that noise ? What is the dog doing ? It is chasing the cat.
b) Jim ?? Are you playing on your computer ? No, I am not.
c) No, Mum, we are not playing, we are working.
d) They are building a new post office opposite the library.
e) You are not going to the party because you are coming to your uncle's with us ! And that's final !
f) Is Sarah leaving London in June ? Yes, she is.
