| 1 | If you know the reasons better, feel free to correct me. | |
| 2 | Staring is one of the causes of refractory problems. | |
| 3 | If you must correct someone, don't get personal about it. | |
| 4 | Thank you for visiting and I look forward to your feedback, suggestions and criticism. | |
| 5 | Is that right? Dylan,who is one of our teaching assistants, he's an expert on all this stuff,so he can correct me. |