Lucy is very busy these days.
Yes.She ___(work) very hard these days

Is working; do you do; are you packing; am flying; doesnt know; is taking;

A. Bill dances very well
B. Shes working hard these days
A. What do you do on Saturdays
A. Why are you packing your suitcase
B. Because Im flying (запланированное действие в будущем, 100 уверенности в своих планах, ведь человек уже собирает чемодан)
A, Fred doesnt not how to swim
B, не вижу слово в скобках.