—Someone is knocking at the door. Who ______ it be?—It ______ be Victor. He went to London yesterday.
Our team tried our best, ________ we failed the match at last.
Mr. Li will go to Guangzhou by air. His workmates are ______ at the airport.
The computerin 1946 in America.
—Why are you so happy today? —Because I to London with my parents tomorrow.
The policeman told us __________ the street when the traffic light was red.