【题目】Nancy isn’t good at __________. She does well in __________. ( )
A.swim; runB.swimming; runC.swim; runningD.swimming; running
【答案】D
【解析】
句意：南希不擅长游泳。她跑得很好。be good at sth.擅长做某事，do well in sth.在某方面做的好，at和in都是介词，介词后要用v-ing形式。swim和 run的-ing形式是swimming，running，故选D。
