问题

__________ these tips, and your time _______ doing research 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
B:Followed, spent, was
C:Follow, spent, will be
D:To follow, spending, has been
正确答案是:
同类题型
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