1) Cows have best friends and can become stressed if they are separated.

2) The average person spends around six months of their lifetime waiting for red lights to turn green.

3) The political system of the People's Republic of China is based on the Communist Party's leadership, with the General Secretary holding significant authority and influence over the country's policies and governance.

4) The eye of a cyclone is a region of calm, relatively clear skies and light winds at the center of the storm.