_________you have a rich knowledge of Chinese history, try acting as a guide for these foreign visitors.
It was a _____ evening and I really had a good sleep.
Is your ring _____ gold?
He has a _______ knowledge of animals.
You’d better put the milk in the fridge, which has a _______ to go bad in hot weather.
The Browns stood staring at the happy _______ of children playing in the park.