The submission of the report is due tomorrow.

I cannot oppose his decision.

He affirmed my proposal.

Last night, all the lights went out due to a sudden blackout.

This product is a limited edition, and the quantity is small.

The children are playing in the schoolyard.

He played the role of an arbitrator.

We need accurate measurements for the science experiment.

He is looking for a certain book.

Bats use echolocation to fly around in the dark.