1. Unemployment has come down slightly, but this does not __________ the fact that it is still a major problem. 2. Darwin’s theory of evolution remains __________ partly because it challenges the religious belief that God created man. 3. The best way to deal with problems at home is to talk things out calmly and honestly and try to reach a(n) __________. 4. Low-cost airlines are emerging all over Asia; this will __________ the development of the world’s air-travel market as a whole. 5. __________ activity involves concentrating a lot of effort or people on one particular task in order to try to achieve a great deal in a short time.