Jerry did not regret giving the comment but felt ________ he could have expressed it differently. (2012·北京,24)
Sitting under the willow trees ____ an old man.
It was with the selfless help of our teacher ______ we realized our dream.
To build a harmonious society, we all have a part to play in the fight ____ injustice, unemployment and crime.
This chemical material is very toxic. So put it ______ the children’s reach.
The central heating system of this office building is down and several workers ______ it right now.