on

______ he was tired he went on working

We’ll go on with the experiment ____he approves ____disapproves.

It is impossible for us to hear everything ____ is going on in the world

Since China has entered the WTO, the ______ on foreign businesses will gradually be reduced.

The heavy rain stopped us _______ at the station on time

A large_______ of money is spent on advertisements every year.

If you _____ on breaking the law, you will go to prison

The governor pays too much attention on his public ______

He was educated at a local grammar school, _____ he went on to Cambridge.

Kids need to _____ empathy on the needy.