Exercise on Present Perfect Simple Form negative sentences in Present Perfect Simple. we / the door / open→ the teacher / our homework / check→ we / him / follow→ we / the bill / pay→ you / the car / repair→ the car / at the corner / stop→ they / a sound / hear→ Harry / trouble / cause→ he / the problem / discuss→ the secretary / the documents / print out→ Back to pool of exercises. ►