______ useful robot! It can help with the housework like a human servant.
A. What an B. What a C. What D. How
—What would you like to have for supper?
—Either noodles or rice OK. I don’t mind.
A. are B. were C. is D. was
---Excuse me, may I come in?
---Not yet. Please wait on your chair _______ your name is called.
A. and B. until C. after D. since
—Which do you prefer, rice or noodles? —__________, thanks. I am not hungry. I only need some water.
A. Neither B. Either C. Both D. All
Mount Tai is so famous that ___ people visit it every day.
A. hundred of B. seven hundreds of C. hundreds of D hundreds
—Look at the bird over there!It's so beautiful!
—It's an unusual kind.It ____ appears here.
A. always B. usually C. seldom D. often
