The Yellow River is the second ______ one in China.A. long B. longer C. longest D the longest
She expectcd him________off the bus with her at the next station.
After a long walk,he was tired and had to stop________a rest.
—What happened________him? —He had an accident.
—What did you see? —I saw some boys________on the playground when I walked past.
—________? —She has a sore back.