| 1 | Again I was impassive and expressionless. | |
| 2 | I looked back, my face impassive and expressionless. | |
| 3 | Tom kept a straight face while telling the joke. | |
| 4 | He knew where his brother was going, but he didn't let on. | |
| 5 | She knew there the children were hiding but she didn't let on. |
Copyright © Purple Culture Co., Ltd. 2001 - 2026. All right reserved.
