____ he was rich, he gave little money to the others.
The little girl kept _____ the house, because she wanted to keep it _____.
___________ the three questions, which one is the most difficult to answer?
The Yellow River is __________ river in China.
The students come to school early, but the teachers come __________.
--We spent all our money because we stayed at the most expensive hotel in town.--Why didn’t you stay at _________ one?