This important lesson by Professor Wang teaches primary students how to ______ themselves from danger.
John looked at the little girl in_____ surprise. He couldn’t understand why a girl at _____ age of four should have said that.
People in Chongqing feel the air here is better than _____ in Beijing.
Another hurricane hit the US, _____ about 9 deaths and 80 injuries.
On the foot of the mountain _____ known as Fog Town.
He was surprised that his wife, as well as all his children, _____ to the party.