Какие есть ошибки в предложениях? 1) The accident happened when they were driving home. 2) The crowd was cheering when

1) The accident happened while they were driving home. 2) The crowd was cheering when the referee blew the final whistle. 3) I didn\'t recognize her at first because she had changed so much. 4) The police stopped her on the motorway because she wasn\'t wearing a seat belt. 5) Some of the players weren\'t listening while the coach was talking to them. 6) We didn\'t use/couldn\'t use the ski slope because it hadn\'t snowed enough. 7) They couldn\'t play tennis because they hadn\'t booked a court. 8) The player got a yellow card because he had taken off his shirt.