A.
1.My friends are studying
2.My father is running
3.The teacher is talking
4.My brother/sister is sleeping
5.The birds are flying
6.People outside are singing
7.We are writing

B.
sitting/not woring
taking/not playing
writing/not running
spending/not shining
traveling/not walking

C.
Is she having lunch
Are they playing football
Is it raining again
Is the cat sleeping
Are we the match winning
Is he drinking now coffee

D.
Are you learning Maths today? Yes,I am stungying very hard
Are they listening to the radio? No,They playing CDs
Are Peter wash now? Yes, He have a bath
They live in Salamanca at the moment? Yes, They visit their family
David sing in a group this year? No, he work in a restaurant