Population experts say that by 2050 the world will have about 2 billion people aged over 60,____as today.
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 _______.
He had a wide _______ of interests, which made him a popular person that all of us like to make friends with.