| 1 | Shall we finish the job tomorrow. | |
| 2 | Past experience proves amply that tradition is not built upon preserving the established but on creation. | |
| 3 | The senior generation generally has an interest in preserving what they've built and an economic incentive to protect their retirement. | |
| 4 | Teaching tends to be stable because of the characters and levels of the teaching practice rationality. | |
| 5 | The expensive war between the Eastern Han Dynasty and Qiang people in northwest borderland lasted for long time, typically reflecting the Eastern Han Dynasty's weakness in the borderland exploiting. |