He had been so absorbed____ watching the car passing by that he didn’t notice his friends ____.

The international agreement, _______ encourage children not to smoke and help people to kick the habit, was signed on 27 February.

Mr. Crossett was made __________ his experiment because of his poor health and old age.

Always remember that your own decision        is more important than anything else.

Mary,          for her healthy lifestyle, was pictured on the front cover of Life Style magazine.

       many failures, I have the courage to meet all challenges.

________ with the other students, the girl has better listening and speaking ability.

Many students, ________ some pocket money and social experience, work during their holidays.

He likes books ________ science because he wonders what and why our world is.

I still remember      to the Famen Temple and what I saw there.