This mortise is perfectly made.

I found a common rabbit in the park.

I went to buy soil to fill the hole in the garden.

He used cement to fill the hole in the wall.

He was digging a hole in the garden.

When winter comes, he goes to the lake to enjoy ice fishing.

It's better for him not to know the truth. After all, ignorance is bliss.

He is feigning ignorance about that problem.

He knows that pain through his own experience.

I have no way of knowing what he is thinking.