these tips, and your time doing research on the Internet much worthwhile. A．Foll

__________ these tips, and your time _______ doingresearch on the Internet _________ much worthwhile.

A．Following,will spend, is                   B．Followed,spent, was

C．Follow,spent, will be                     D．To follow,spending, has been

试题答案

【答案】

C

【解析】

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