He is always ready to help others. That’s one of his _____.

Every weekend my younger brother will go to help the old man far away my house,for which he often received some            from the old man,such as a pencil and some sugar.

I can’t say which sofa looks better. It’s just a (an) _____ of personal preference.

People say, “Guilin’s scenery is superb in the world.” It was not until I visited the place that I found it really worthy of the _______.  

The teacher kept his _______ and took his students to the cinema，where they had _______.