—Look! What a nice classroom! — Yes, it ________ every day.
A. is cleaning B. has cleaned C. is cleaned
—It smells terrible. What has happened here?
—Look, there is a chemical factory ____waste water___ the river.
A. pour; into B. pouring; into C. poured; to
— Where are Maria and Kangkang ? — They aren’t here. They ________ England.
A. have been to B. have been in C. have gone to
—________ the population of the U.S.A. in 2005?
—It ______ about 296 million.
A. What is; is B. What was; was C. How many was; was
________ of the teachers ______ women in our school.
A. Two third; is B. Two threes; are C. Two thirds; are
—We haven’t been to Beijing. --________
A.So has he B. Neither has he C. So he has
