A. Don't panic! The concert hasn't started yet!
B. 'Where is your sister?' 'She hasn't come back from her holiday yet.'
C. I'm not tired. I've just had a nap.
D. We have already visited the local market. You should go there too.
E. They haven't served us any foods yet. We have to wait.
F. Margaret has only just arrived but she has yet/ already been to the beach.
Объяснение:
