21．---Hello, Karen, come in .________.
---- Thank you.
A．All right B．Make yourself at home
C．That’s my home D．It’s a great honor
22．A person should be __to his own country. He shouldn’t do anything against his country.
A．kind B．honest C．loyal D．brave
23．The house must have been ____ for many years, because there’s much dust on the desks and chairs.
A．lonely B．deserted C．alone D．empty
24．____ has been announced, we shall have our exam next week.
A．It B．As C．That D．What