| I | whiten | |
|---|---|---|
| you | whiten | |
| he/she/it | whitens | |
| we | whiten | |
| you | whiten | |
| they | whiten |
| I | whitened | |
|---|---|---|
| you | whitened | |
| he/she/it | whitened | |
| we | whitened | |
| you | whitened | |
| they | whitened |
| I | have | whitened | |
|---|---|---|---|
| you | have | whitened | |
| he/she/it | has | whitened | |
| we | have | whitened | |
| you | have | whitened | |
| they | have | whitened |
| I | had | whitened | |
|---|---|---|---|
| you | had | whitened | |
| he/she/it | had | whitened | |
| we | had | whitened | |
| you | had | whitened | |
| they | had | whitened |
无例句可用
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