Charles is my best friend.

My smartphone's battery has run out, so I need to charge it immediately.

My cell phone battery is dead, so I need to charge it.

I used a teaspoon to add a spoonful of sugar to my coffee.

His airplane landed safely.

The airplane landed safely.

We are planning to visit the tea plantation this weekend.

The chime rang, and the class began.

Please sit down before the meeting starts.

Please sit down before the meeting starts.