English grammar exercises - test 2, exercise 4

Make these sentences negative.

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He has already sung in our town. - He in our town .
She has hurt her knee. - She her knee.
He has been working on it for ages. - He on it for ages.
We have refused his help. - We his help.
They have been cleaning the lawn since we came. - They the lawn since we came.
I have been playing the flute for a long time. - I the flute for a long time.

Try more present perfect vs present perfect continuous exercises. See also our English grammar exercises and rules on other English tenses and sentence structures online or in esl printables and English worksheets.

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