People at the bus stop

Last night, when I was waiting at the bus stop, I saw a man leering at this woman who was standing next to him. She soon realised that he was staring at her, and she scowled back at him. Her frowning face looked so threatening that this man left the bus stop even though the bus hadn't arrived.

People at the bus stop.

Last night while I was waiting for the bus, I saw a man leering at a woman who was standing next to him.  She soon realized that he had been staring at her, and she scowled at him.  Her frowning face looked threatening that the man left the bus stop even though the bus had not yet arrived.