The sign _____ “In case of _______ fire, break the glass and press _______ red button.”

Excuse me, when ________ you ________ the man in blue—Last year. And I ________ him for one year.

The speech given by Primer Wen Jiabaoshowed ______ broad knowledge he has.

BBC是“_____________”的缩写。

_________ many times, but he stillcouldn’t understand it.