a. You can't remove these new stains as easily as you did the old ones.
b. You can't remove these new stains as easily as you did with the old ones.
c. You can't remove these new stains as easily as you removed the old ones.
Which are grammatically correct?
Many thanks
did with
Moderator: Alan
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Re: did with
All possible, but (a) is the most felicitous. ('With' in (b) is redundant.)