It was a difficult time, but we never ________ hope.
She finished the work _____ as soon as possible. She’s very happy now.
—Do you know him? —I’m sure I’ve seen him _____, but I can’t remember the right place.
What can we students do _____ the environment?
—How long have you lived in this town? —_____ 2001.
There are five people in the room, but I know _____.