We ______ recycle to save the planet.
must
Not all birds ______ fly.
can
You ______ buy milk in the shop next to my place.
can
Look at my eyes! I really ______ sleep more.
need to
Kim ______ study. She is a genius :)
doesn't have to
Remember, you're in a library, you ______ speak loudly.
mustn't
You _____ smoke in the hospital. It's forbidden.
mustn't
You _______ water the flowers because it's rainning.
don't have to
____ I use your laptop, please?
can