B
1 is writing
2 is losing
3 is having
4 is staying
5 amnot telling
6 is always using
7 are having
8 Are you playing
C
1 are top musicians studying => Do top musician study
2 don't touch => aren't touching
3 does
4 is Christine listening
5 am usually buying => usually buy
6 is starting => starts
7 Does your team win => is your team winning
8 are enjoying => enjoy