It _________ be the only way to solve the problem. There are other choices.
may not
mustn’t
need
should
—Lucy, do you ____ your sister, Lily? —No, we look different.
—____ your sister know Tom? —No, she ____.
—____ is his car? —It’s black.
James is an English boy. He _____ from England.
My name ____ Jack. Liu Ying and Sun Mei ____ my friends.