—Whose dictionary is this?
—It ______ be Jack’s. Look, his name is on Page 1.
must
need
can’t
could
________ new words is important in ________ English.
It takes Mr Wang 20 minutes ______________ lunch every day.
—Jack, your hair is too long! —Really? I’ll have it _____ right now.
We often see Betty ____ the old man with his housework.
You’d better stop ________ .You look too tired.