Yu helped me with my homework.

It seems that this river is flowing backwards.

Tsutomu vowed eternal love.

His movement was very fast.

This room is very dirty.

Before starting a new business, he said, 'Nothing ventured, nothing gained.'

The Uniform Resource Locator indicates the address of a web page.

He used a screwdriver to assemble the furniture.

This offspring cannot yet be separated from its mother.

He fell in love with her.