Jack used to give most of his money to people in trouble. How do you like him —Some thinks he might be kind of _______. But more people are grateful to him.

You’d better not ring me up between 9 and 10.I________ an important meeting then” Dr. Lee said.

Are ______ Kate’s ______— Yes, they are.

The mother asked the boy ________ football in the street. It was dangerous.

White-collar workers in China are willing to postpone their retirement age ______ blue-collar workers prefer to retire early.