We feel ________ our duty to make our country a better place.

Only when the European countries’ financialsystem broke down_____ to take measures to deal with those problems.

didn’t remember the exact date of the storm, but she knew it was ________Sunday, because she was at _____ church.

Some children want to challenge themselves by learning a language different from _____ their parents speak at home.

The policeman stop him when he was driving home and________him of speeding.