As we know, the UK _____ four parts, England, Wales, Scotland and Northern Ireland.

The film Gone with the Wind was shot in Atlanta, the US because the novel was _____ the American Civil War．

Try not to cough more than you can _______ since it may cause problems to your lungs. 

 My uncle’s house is much smaller than ours, but it is twice         expensive.

(湖北高考)At the meeting they discussed three different ________ to the study of mathematics.