A survey of the opinions of experts that three hours of outdoor exercise a week -- good for one’s health.
When we visited Zhangzhuang again ten years later, we found it changed so much that we could hardly ________ it.
Can you tell me if you have found the key ________ your car.
Sometimes ________ English is quite different from _______ English in many ways.
_____ of the students who took part in the military training is 450.
We discussed where to go for a whole morning, but we decided to stay at home_____.