Raising environmental awareness was the aim of our art exhibition ____ last week.
__________ with a difficult situation, Arnold decided to ask his boss for advice.
The accident that happened at an oilfield __________ the southeast coast of the USA has caused great damage to the environment.
The project alongside with the experiment we had once devoted so much time __________ perfectly.
-Were you busy last week-end?-Very. Rather than __________ time playing cards as usual, I devoted every effort to __________ an advertisement.
__________ to improve the students' sight, the eye exercises are done in schools nation-wide.