下午放学了,你与老师告别时应该说:A. Yes, sir.B. Goodbye!
That is ______ film.A. a B. an C. /
We see some people ____ happily on the street.A. walking B. to walk C. walks
_______ you feel tired?A. Are B. Do C. Does
There _______ many people on the street.A. is B. are C. have
May I ____ some grapes?A. to have B. having C. have