______ (地球是圆的)is true.
______ (会议什么时候举行)has not been announced.
______ (无论谁离开办公室)should tell me.
The trouble is ______ (我把她的地址丢了).
I don't understand ______ (我为什么不能在这儿用这个单词).
The belief ______ (我们一定能赢)inspired all of us.
There is no doubt ______ (全国人民将支持雅安灾后重建工作).
They haven't informed us ______ (会议几点开始).