_____ you help me with my homework?
Can
We _______ litter! We ______ save the Earth!
mustn't / must
He ___ swim really fast because he learned how to swim since he was 2 years old.
can
We ______ wear uniform at school.
must
You ______ call your friends names!
must not ( mustn't )
You ___ wash your hands before eating.
must
She ___ play the piano very well.
can
I ________ go to school because I am sick
cannot (can't)
Alice ______ cook but she ______bake delicious cake!
cannot / can
You ______ sometimes eat sweets but you ________ eat them everyday !
can / mustn't
___ we play football now?
Can
You ________ go to the gallery but you ________ take pictures in the gallery. If you take pictures, you ______ pay 50.000VND
can / mustn't / must