Statistics show that men have ___ as women do for every mile they drive. 

Some passengers complain that it usually _________so long to fill in travel insurance documents.

The Southern States wanted to ______ the Union, so the American Civil War ______. 

They ________ many difficulties during World War II, but they never lost confidence about life. 

Nowadays there are still a number of students        school at various grades due to a lack of money in some poorer areas.