– Listen ! Is Professor Johnson giving a report in the hall?– No, it _______ be him. He has gone to America.
Jiangyin, our hometown, ________ an area of 987 square kilometers.
—Are Grace and Joe coming to “Happy Camp” by plane? —I’m not sure. It is said that their father ________ drive them here.
—How many workers are there in your factory, Mr Brown? —________ workers in our factory _________2000.
______ time went by, Cindy and the other kids became good friends.
Hearing the bell , all the students stopped to_________ their books , ready to go back home.