A young woman was driving through the lonely countryside.  It was dark and raining. Suddenly she saw an old woman by the side of the road, holding her hand out as if she wanted a lift. "I can't leave her out in this weather," the woman said to herself, so she stopped the car and opened the door.  "Do you want a lift?" she asked.  The old woman nodded and climbed into the car. After a while, she said to the old woman, "Have you been waiting for a long time?" The old woman shook her head. "Strange," thought the young woman. She tried again. "Bad weather for the time of year," she said. The old woman nodded. No matter what she said, the hitchhiker  gave no answer except for a nod of the head or a shrug. Then the young woman noticed the hitchhiker's hands which were large and hairy. Suddenly she realized that the hitchhiker was actually a man! She stopped the car. "I can't see out of the rear screen," she said, "Would you mind clearing it for me?" The hitchhiker nodded and opened the door. As soon as the hitchhiker was out of the car, the terrified young woman raced off. When she got to the next village she pulled up. She noticed that the hitchhiker had left his handbag behind. She picked it up and opened it. She gave a gasp; inside the bag was a gun. The young woman asked the hitchhiker to clear the screen because   _  .
This was the way she thought of to get rid of him she couldn't see out of the rear screen the hitchhiker was very helpful the rear screen was covered with dirt