She was a          person and wouldn’t let anyone or anything stop her.

 Whether the buildings in this area should be pulled down has remained ________; people are still looking for other possible solutions.

—What was his performance like? —Oh, it couldn’t have been___．

Can you tell me the        difference between the words “require” and “request” ? I sometimes get puzzled by their meanings.

If I find someone who looks like the suspect, my _______ reaction will be to tell the police.