The whole town was covered in snow.

Due to the falling of volcanic ash, the entire town was covered in gray.

The town was covered with volcanic ash.

The entire town was covered in volcanic ash due to the eruption of the volcano.

The volcano erupted and the ashfall began.

We need to review the whole plan.

Looking at it as a whole, his plan is likely to succeed.

His car is gray.

His car is gray.

A volcanic eruption makes you feel the power of nature.