.Mr. Richard hasn’t got any time to play golf these days,because he is ______in the research of bird language.
I was not in Fuzhou last September, otherwise I ____ the opening ceremony of the 5th National Special Olympic Games.
—Can all the donation be delivered to the earthquake-stricken area? —Hard to say. Even if only 1% can reach them, I am still glad to do it, as the saying goes, “”.
Hardly __________ dead or injured when the disaster hit the area.
With so many things mixed up it’s hard to _______ what’s what.
While building a tunnel through the mountain, ______ .