He has never been to Beijing, ______?A. hasn't he B. has he C. doesn't he
________ should not be asked to study at night on weekends.
Mike Miller is such a quiet student that he kept silent most of the time and ______ talked to his classmates in the school.
Did you know that there were ________ visitors in Luoguo Xiang in Beijing last week?
Annie always gets good scores in lots of exams because she is a girl.
The trees are best friends. They give us a large number of things that we need.