He needed a fathom's depth to ask that question.

He ate three apples.

He was a swordsman named Zan in the past.

He scattered the seeds.

She gave birth to a baby in the maternity hospital.

My younger brother is good at addition in arithmetic.

This silkworm produces beautiful silk.

This lemon is sour.

We cannot live without oxygen.

He calculated the area of the triangle.