----Listen! Is Kitty in the next room? ---- No, it ______ be Kitty. She has gone to Beijing.
The 2014 Youth Olympic Games _______ in Nanjing next year.
—Why not watch the popular TV program “If You Are The One” (非诚勿扰)? —_________________.
If you work hard and never __________, you will learn maths well.
—Mother’s birthday is coming, I’ll make a card for her. Please keep it secret. —_____________.I won’t tell anybody about this.
Cycling isn’t _________ climbing, but both of them are interesting.