The public sign in the library means people ________ smoke there.
could
must
couldn’t
mustn’t
—Don’t stop trying ________ your dream comes true. —Yeah.
There_______ a meeting tomorrow afternoon
--Guess what I want to be when I grow up. --I think you want to be a(n) _____ . You love beautiful things, right?
My sister is looking forward ____________ a holiday .
I need a bike __________ to school.