---What’s wrong ______ Maria? ---She has a cold. A. with B. of C. about
The colour of this book is similar to ________ of mine.
It is not wise ________ teenagers to be crazy about stars. It is more important _____ them to learn more about Chinese culture.
It is wrong of a student ______ his homework by himself. Copying makes one lazy.
I like using QQ to make ______ easier for friends to contact with each other.
She was very us for informing her of her son’s safe return.