| I | contaminate | 
|---|---|
| you | contaminate | 
| he/she/it | contaminates | 
| we | contaminate | 
| you | contaminate | 
| they | contaminate | 
| I | contaminated | 
|---|---|
| you | contaminated | 
| he/she/it | contaminated | 
| we | contaminated | 
| you | contaminated | 
| they | contaminated | 
| I | have | contaminated | 
|---|---|---|
| you | have | contaminated | 
| he/she/it | has | contaminated | 
| we | have | contaminated | 
| you | have | contaminated | 
| they | have | contaminated | 
| I | had | contaminated | 
|---|---|---|
| you | had | contaminated | 
| he/she/it | had | contaminated | 
| we | had | contaminated | 
| you | had | contaminated | 
| they | had | contaminated | 
无例句可用
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