What the doctor really doubts is ______ my mother will recover from the serious disease soon.

The present question is ____ many students consider it impossible ____ is really possible if effort is made.

Courage is a kind of quality --- and that’s __________it takes to face the challenges in life. 

 The reason________ Peng Liyuan is widely discussed recently is ________ she is seen as the most beautiful first lady in China.

---Tell me something about your adventure in the rainforest, please.---We lost our way in the forest and ___ made matters worse was ___ night began to fall.