Складність:
00:15:00
| 1. | Grammar. Zero and indefinite articles | 2Б. |
| 2. | Grammar. Use of zero and indefinite articles | 2Б. |
| 3. | Grammar. Definite, indefinite and zero articles | 2Б. |
| 4. | Grammar. Using zero and indefinite articles | 2Б. |
| 5. | Grammar. Use of definite and indefinite articles | 2Б. |