2. ____ many times, but he still couldn’t understand.
.______, the pay isn’t attractive enough, though the job itself is quite interesting.
Most parks in our city are free. They don’t charge money for ________.
The meal over, the managers went back to the meeting room to _______ their discussion.
The school dinning room _______ as a meeting place for teachers and students.
The old man was found _______ on the floor _______.