* Choose a word in each line that has different stress pattern.
1. A. mushroom B. demand C. sandal D. tunnel
2. A. underpass B. exhibit C. compartment D. extended
3. A. collective B. elevate C. suburban D. initial
4. A. vocabulary B. illiteracy C. cooperative D. anniversary
5. A. professional B. pedestrian C. exhibition D. facility
6. A. flyover B. exporter C. obedient D. considerably