unmarried mothers and children in single-paren\r3. It says women tend to work longer hours than men both at home and on the job.\r4. It will be one to illustrate why getting a job is no longer optional for women.\r5. Fathers' income usually exceeds mothers' income, but it is women who usually cont:\rof their income to their family.\rComprehension of the Text\rII.\r1. C 2. C 3. B 4. A 5. B 6. C 7. B 8. A\rVocabulary\rIII.\r1. undergo 2. released 3. concludes 4. overtaking 5. maintain\r6. contribute 7. vary 8. adequate 9. optional 10. migrate\rExercises on Web course only:\r11. rare 12. urgent 13. prime 14. agenda 15. dissolved\rIV.\r1. on/upon 2. about 3. to 4. to 5. for\r6. to 7. in 8. to 9. as 10. by\rExercises on Web course only:\r11. by