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  • 更新 2022-09-04
  • 科目 英语
  • 题型 选择题
  • 难度 中等
  • 浏览 81

________ the convenience of digital payment, many senior citizens started to use smart phones.            

A.

To enjoy

B.

Enjoying

C.

To have enjoyed

D.

Enjoy

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theconvenienceofdigitalpayment