—Is Mr.Smith over there?
—It ________ be him. He has gone to Beijing on business.
A.can't B．must C．might D．Can
- was the car invented?
--It was invented in 1983.
A. When B. Why C. How D. Who
I enjoy playing computer games, but I can't spend too much time ________ that.
A．in B．on C．for D．to
________ is bad for your eyes ________ TV too much.
A．It; to watch B．It; watching
C．This; to watch D．This; watching
She is ________ poor ________ buy that nice dress.
A．so; that B．too; to
C．to; too D．that; so
—How often do I need to feed the dog?
—It ________ food every day, or it will be hungry.
A．must give B．must be give
C．must be given D．must be gave
