| 1. | The , comma , which , is , a , common , form , of , punctuation , separates , words, phrases, and , clauses. (correct as is) |
| 2. | The , writer , whose , decision , is , to , mark , off , an , adjective , clause , has , carefully , considered , the , use , of , the , clause. (correct as is) |
| 3. | The , clause , which , is , usually , the , largest , part , of , a , sentence , has , a , simple , subject , and , a , simple , predicate. (correct as is) |
| 4. | Adjective , clauses , which , are , my , favorite , clauses , are , begun , by , the , common , pronouns , "who, whom, whose, which, and , that." (correct as is) |
| 5. | The , writer , who , uses , adjective , clauses , has , a , decision , to , make. (correct as is) |
| 6. | The , adjective , clause , that , is , just , added , information , is , marked , off , by , commas. (correct as is) |
| 7. | However, the , adjective , clause , that , is , essential , to , the , full , meaning , of , the , sentence , is , not , marked , off , by , commas. (correct as is) |
| 8. | This , sentence , illustrates , the , point: "The , astronaut , who , was , the , first , man , on , the , moon , will , attend. "(correct as is) |
| 9. | The , adjective , clause , that , is , shown , in , sentence , #8 , above , is , essential , to , the , full , meaning , of , the , sentence. (correct as is) |
| 10. | Our , team , captain , who , is , my , best , friend , will , be , pitching. (correct as is) |
| 11. | The , school , that , is , on , Main , Street , was , damaged , in , the , January , earthquake. (correct as is) |
| 12. | Ms , Jones , who , is , my , English , teacher , is , being , nominated , for , teacher , of , the , year. (correct as is) |
| 13. | The , chairperson , whom , we , just , elected , last , meeting , has , resigned , the , position. (correct as is) |
| 14. | The , President , of , the , United , States , who , I , just , met , last , month , will , visit , Montana. (correct as is) |
| 15. | That , special , rock , group , that , plays , classical , rock , will , play , at , the , benefit , concert , tonight. (correct as is) |
| 16. | The , high , tide , today , which , is , my , favorite , time , at , the , beach , also , brought , high , surf. (correct as is) |
| 17. | Seagulls , that , were , above , the , beach , flew , near , the , surf. (correct as is) |
| 18. | The , sun , which , I , had , missed , so , much , came , up , and , warmed , the , beach. (correct as is) |
| 19. | The , surf , champion , who , is , from , our , hometown , will , be , here , today. (correct as is) |
| 20. | Surfboards , that , are , made , of , fiberglass , and , foam , are , the , best , boards. (correct as is) |