People ______ at the meeting would have a discussion on pollution.
The chairman will be pleased at ________ scene that everything is in ________ place.
―Karen, can I talk to you for a minute? ―Sure, ________?
Word has come ________ some visitors will come for a visit to our school next week.
Returning to my room, ________.
After going into the concert hall, the mother ________ a friend and went over to greet him.