提供一篇英语文章，要求对其中的语法错误进行纠正。
This days, it's very common to see people using their cellphones while they're driving. Not only this could lead to an accident, but it is also illegal. When you're driving and you need to use your cellphone, you can always stop your car and park it in a safe place.
These days, it's very common to see people using their cellphones while they're driving. Not only could this lead to an accident, but it is also illegal. When you're driving and you need to use your cellphone, you can always stop your car and park it in a safe place.