Because they were born in different years.

4.
Explanation:
You need to count the number of closed circles.

Staring (starting, staring, string, sting, sing, sin, in, I)

Father.

Honeydew

Blueberry

Your breath.

A car.

It was a bight morning

A jeweler sells watches and a jailer watches cells.

All the people on the boat are married.

He throws it straight up.