It ____ rain later, so we should bring umbrellas. (there is a chance)
may
Sarah ____ make new friends.
should
I _____ remember to buy milk on my way home.
must
They _____ be far away; I saw their car parked nearby.
can't
She ______ eat more vegetables for better health.
needs to
We _____ finish our homework before watching TV.
have to/ must
She ____ be studying for her exam because she's been in her room all day. (I'm 100% certain)
must
He _____ attend the meeting tomorrow. (a small chance)
might
We _____ step on the grass.
mustn't
You _____ brush your teeth before bed.
have to/ must