Hi,<br/><br/>Are the following sentences natural to a native ear?<br/><br/><span style="color:#0000ff;">1. Run for your lives, don’t look back!</span><br/><br/><span style="color:#0000ff;">2. He changed sides in the middle of the season. ( he joined the opposite team)</span><br/><br/><span style="color:#0000ff;">3. I am worried about such instances occurring in the future.</span><br/><br/>Thanks,<br/><br/>MG.