I ___________(not have) anything to eat since breakfast
hadn't had
I ___________ (watch) Netflix all day!
have been watching
I ___________ (sit) in the classroom for half an hour
have been sitting
I ___________ (learn) English since I was six
have been learning
I ___________(know) my best friend for five years
have known
I ___________ (gain) five kilos since the quarantine started
have gained
It ___________ (not rain). Look! the floor isn't wet.
hasn't been raining
I ___________ (never/like) goinf to the hairdresser
have never liked