Sarah looked at ______ picture she had taken in the park with _______ delight.
---When did you get to know each other ? ----It was in 2008___we spent summer vocation together.
Many parents have called head teachers to know ______ their children are getting along well with everything in the school.
The US Space Agency sent up a space probe to hit the moon to see ______.
You can never imagine what great trouble I have had ______the patient who receive a serious wound.
______ of the land in Jia Xing No. 1 Middle School _______ covered with trees and grass.