Thegapbetweenruralandurbaneducatio

发布时间：2020-07-12 04:41:01

The gap between rural and urban education in China is widening, and education is the key to _____ rural problems












A.solving











B.solve










C.have solved










D.having solved

网友回答

A解析考查非谓语动词。the key to……的关键，to为介词，故选A。
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