It's not raining. You [.............] to take your umbrella
don't have to
doesn't have to
can't
Students [..........] use a red pen when taking an exam
can
mustn't
have to
You [.....] share your password with anybody
need to
have to
should
mustn't
You can wear your own clothes, you [......] wear uniforms at this school
don't have to
have to
mustn't
Sue has had that book for a long time. She [.....] return it to the library
must
can't
doesn't have to
He's not a kid anymore. He [.....] read fast
can
mustn't
Hey! What are you doing? You [.....] smoke here
mustn't
can
Your hamster has depression! You [........] take care of him
don't have to
have to
mustn't
can't
You [....] study more if you want to pass the test
must
don't have to
mustn't
I [......] swim when I was younger, but now, I can!
couldn't
mustn't
