Question

complete com can ou must
i study today because i have a test tomorrow.
my sister play tennis very well.
we wash our clothes,they are very dirty.
joel. swim two kilometers.

Answer 1

Boa noite,

Creio perceber o que quer.

I must study today because I have a test tomorrow.

My sister can play tennis very well.

We must wash our clothes , they are very dirty.

Joel can swim two kilometers.

("must" é usado no sentido de "obrigação, de ter de fazer algo";

(" can " é usado no sentido de " ser capaz de "

Espero ter ajudado.
Qualquer dúvida, envie comentário.
Bom estudo.