Question Detail While walking across the river a car knocked him down. he was knocked down by a cara car knocked himhe was by a car knockedNo improvement Answer: Option A Similar Questions : 1. He dislikes coffee, isn't he ? doesn't hedidn't hehaven't heNo correction Answer: Option A 2. We have been working off and on for several days to complete this project. constantlyon and off regularlyon or offno error Answer: Option B 3. When it was morning they decided to put at an inn. put out input off atput atput up at Answer: Option D 4. Karan has been ill for a week when her parents arrived for a visit. have been illmight be illhad been illNo correction Answer: Option C 5. The winter has set in and the days are getting colder. set offset upset withset in Answer: Option D Read more from - Sentence Correction