He made another wonderful discovery, （ ） of great importance to science.

The government cannot operate effectively （ ） it is free from such interference.

He had never given a speech to so many people, so he felt（ ） .

（ ） has already been pointed out before, English grammar is not a set of dead rules.

Mass production has made （ ） the goods and services we want at a lower price.

I got so tired that I just couldn’t move a step _____.

Mr. Jones, _____ life was once very hard, is now very successful in his business.

From her conversation, I_____that she had a large family.

You needn’t introduce him to me. I’ve met him on several _____.

Our company’s service is （ ） in nearly 80 countries around the world.

We mention the importance of giving up smoking once and again, but hardly ______ it.

____________ , we will review all the lessons before the final exam.