He has lived at for 30 years.
Some friends tried to settle the quarrel between Mr.and Mrs.Smith without hurting the feeling of______,but failed.
Everybody in the class must give in______exercise books within the given time.
Understanding the cultural habits of another nation,especially ______containing as many different subcultures as the United States,is a complex task.
—Have you got ______ready for the dinner?—No,I still need to buy some pork and vegetables.
—Where can I tie the horse?—Oh,you can tie it to ______of the tree.