Tom felt that he himself , rather than the girls,      for the failure of the football match.

Every possible means ______ to prevent the air pollution, but the sky is still not clear.

 Mary is one of the girls who _____ often late for school.

—Remember that where and when two different English question words___________. —I see, but can you tell us how to use them, sir?

When and where to build the new factory _____not decided yet .