—Who should be responsible for the accident?—The boss, not the workers.They just carried out the order .
The air is deadly polluted because some factories don't ________ the rules to protect the environment.
The visiting minister expressed his satisfaction with the talks, ______ that he had enjoyed his stay here.
You should try not to get ________ in the trouble between them.
Many countries are in great need of natural gas, wind and other forms of ________.
Good heavens! There you are! We were all ________ about your safety. We were expecting you to come back much earlier all through the night.