.The reason ____ I have to go is _____ my mother is ill in hospital.
The doctor must have sat up all night with his patient, __ you see, he looks tired and sleepy.
It’s quite warm __December in China.
The mountains look grey ___ the blue sky.
Xiao Li didn’t come to our party. We all fell sorry __ him.
Taiwan is an island that lies ___ the southeast coast of China.