单项选择题
He ()a plow superior to any other in existence.
A.discoveredB.foundC.inventedD.created
单项选择题 Prices of fish ()from two to five yuan a kilo.
单项选择题 He ()his tie as soon as he walked out of the office building.
单项选择题 The evergreen shrubs struggled to ()the dust and fumes from the busy main road.