The water level of the river has increased _________ half a meter since it began to rain 7 days ago.
—__________ 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.
—I am __________ endless examinations. —Cheer up, David. Keep on until the college entrance examination ends.