Every possible means __________ （已用来） to prevent the air pollution, but the sky is still not clear. （use）

Helen had to shout to make __________ （人们听到她的话） above the music at yesterday’s party. （herself）  

News reports say peace talks between the two sides have broken down  _______________ (未达成协议).     (reach)

While you are abroad, do remember__________________(使自己适应) observing the local safety rules.  (adapt)

If you don’t go travelling to Mount Tai, neither ___________________(我也不去). (will)

________________（碰巧） the poor lady had left the necklace somewhere on the way home.   (occur)

The energy______________(一定用完了)，for the fire went out of itself. (use)

When everyone  _________(在怀疑是什么) that makes them divorce, its seems to us that there are two main causes. (doubt)

Now, __________(人们普遍认为) that no college or university can educate its students by the time they graduate.  (accept)