| 1 | He is far from (being) an excellent student. | |
| 2 | Until recently, the level of optimism was not realistic. | |
| 3 | So he was not untrue to what the campaign said. | |
| 4 | One of the allusions was not exactly coarse, but somewhat vulgar. | |
| 5 | If you compare it to old plants, yes it's better, but it's not 'clean' in any way. |