| I | smoothen |
|---|---|
| you | smoothen |
| he/she/it | smoothens |
| we | smoothen |
| you | smoothen |
| they | smoothen |
| I | smoothened |
|---|---|
| you | smoothened |
| he/she/it | smoothened |
| we | smoothened |
| you | smoothened |
| they | smoothened |
| I | have | smoothened |
|---|---|---|
| you | have | smoothened |
| he/she/it | has | smoothened |
| we | have | smoothened |
| you | have | smoothened |
| they | have | smoothened |
| I | had | smoothened |
|---|---|---|
| you | had | smoothened |
| he/she/it | had | smoothened |
| we | had | smoothened |
| you | had | smoothened |
| they | had | smoothened |
无例句可用
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