The greater part of the time is spent on work.

This project was partially successful.

In French, the partitive article plays a very important role.

He has a deep interest in archaeology.

He understands the importance of learning.

He is majoring in psychology.

Gaku is my best friend.

He was staring at the horizon on the sea.

He was staring at the horizon.

He is spending a lot of time on experimental research.