Choosing the flooring for the new house is difficult.

He couldn't answer the phone because of his absence.

This building is made of high-quality building stone.

He was entrusted with the receivership of the company.

This building is made of high-quality steel.

We are choosing building materials to build a new house.

This oil solution is used to reduce friction in machinery.

It is said that this tree has been living for over a thousand years.

His grandfather is still going strong even at the age of 90.

He was convicted of a serious crime.