—come and join US. Jimmy! —I’m sorry, but I’m really busy now. If I ____ time, I would certainly go.
— Who’s singing in the next room? — It ____ be her . She has gone to New York.
— Do you know _____? — Next Sunday.
— What kind of movies do you like? — I like the movies ____ are about Chinese history.
We should never ____till tomorrow what we can do today.
— How was your trip to Hang Zhou, Jim? —Great! We ___ to Xixi National Wetland Park.