Can I say,<br/><br/>Suddenly, Peter slipped and fell in the river. He shouted for help.<br/><br/>(a) Luckily, a young man <u>was jogging near the river.</u> he came to save Peter.<br/><br/>(b) Luckily, a young man <u>was passing by (the river) / a young man passed by</u>. He came to save Peter. <br/><br/>(c) Luckily,<u> there was a young man passing by. </u>He jumped to save Peter.