Our teacher always tells us that lessons can be learned to face the future, ____ history can’t be changed.

This is _____ brother. _____ name is Tom.

John’s pale face suggested that he ______ill, and his parents suggested that he ______a medical examination.

The speech by the mayor of Shanghai beforethe final voting for EXPO 2010 is strongly impressed ___ my memory.

r _____ engine trouble, we stopped for the night at a roadside rest area.