________ sad news it is! We must try our best to help them out of trouble.

—________ hard work it is!—Yes, but he seems _____ to do it.

_______ hard work it is! I can’t do it by myself.

—Do you know that a 13-year-old English boy has done a nuclear experiment successfully? —_______ unusual work he has done!

---- I hear that China is building an Aircraft Carrier ( 航空母舰 ）---- _______ great news it is !