_______ with the present situation, the local government could not find effective measures to reduce the risk of coal mine accidents.
—Thanks so much for everything. You have certainly made my stay very pleasant. —__________.
—__________ for the fire! —It's OK. I'll be careful enough.
I remembered __________ the door before I left the office, but forgot to turn off the lights.
The manager __________ the workers how to improve the program since 9 am.
In order to find the missing child, villagers __________ all they can over the past five hours.