1. She ___ bear bore born gave birth to ___ a new baby boy last night.	2.___ I am It is ___ difficult to speak English without an accent.
3. There ___ is are ___ a great deal of ___ researches research ___ on that subject.	4. Due to ___ hardworking his hard work he works hard ___, he received a rise in pay.
5. After years of hard work, he ___ become becomes has become is become ___ a good player.	6. People must never discriminate ___ against for towards on ___ anyone.
7. Many people ___ are concerned about are concern about concern concerning ___ National Education.	8. Some internet addicts ___ are lack lack of lack in lack ___ social skills.
9. More ___ analyze analysis ___ is needed to solve the problem.	10. Students must ___ choose choice ___ their major subject carefully.
11. People ___ are easy to may easy to may easily ___ become ill in flu season.	12. ___ I am They are It is ___ difficult to learn English grammar rules.