We did a survey of our readers.(改为否定句) We __ __ a survey of our readers.

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Wedidasurveyofourreaders.(改为否定句)We____asurveyofourreaders.Wedidasurveyofourreaders.(改为否定句)We____asur

We did a survey of our readers.(改为否定句) We __ __ a survey of our readers.
We did a survey of our readers.(改为否定句) We __ __ a survey of our readers.

We did a survey of our readers.(改为否定句) We __ __ a survey of our readers.
didn't do

didn't do
望采纳 想想