The number of people invited _____fifty, but a number of them ______ absent (缺席) for different reasons.
The visitors our factory two days ago.
The story happened ________ the 19th century
Sign means “please don’t park your car here.”
–Where is Mr. Smith? --He isn’t here. He ______ to England.
—Have you seen book on the desk? —Is it English book? I saw it just now.