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【题目】Hopefully in 2030 we will no longer be e-mailing each other, for we more convenient electronic communication tools by then.

A.have developedB.developed

C.will have developedD.had developed

【答案】C

【解析】

考查时态。句意:希望在2030年,我们不再互相发电子邮件,因为到那时候我们将开发出更方便的电子通信工具。根据时间状语in 2030可知,此处应用将来时;再根据时间状语by then(到那时),可知应用完成时。结合两者可知用将来完成时。故选C

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