I tried to cover up with a smile at him.

If she was trying to cover up some sort of deep hurt.

We try to cover them up, but history doesn't let go.

He might be just trying to cover himself up on that.

Why did your people try to cover up her memories?

If anything does go wrong, they'll try to cover up, they always do.

But she said the department was not trying to cover up or avoid potential problems.

He will be trying to cover up all knowledge of our activities.

But we do not kill and then try to cover up the crime.

The police seem to be trying to cover it up.