We booked a double room.

He likes to take a walk in the park at dusk.

The ejecta from volcanoes help to elucidate the geological history of the Earth.

He has fundamental knowledge of mathematics.

His recovery was truly miraculous.

Japan exports a large amount of electronic products.

Understanding the exposed form is important in learning Japanese.

The submission of the report is due tomorrow.

There are many arguments arising from diverse opinions about that issue, and no conclusion has been reached.

The axiom of choice is one of the basic axioms of mathematics.