I can't concentrate if you keep talking _______ I'm trying to study.
while
You can't take pictures __________ the ceremony.
during
I couldn't sleep _______ two days.
for
I've been studying English_________ a couple of years.
for
Did anybody call _____ I was away?
while
Please, be quiet _____ the children sleep.
while
He announced his new plans _____ the speech.
while
People can live without water_____only 2-3 days
for
