II. challenge [ˈtʃælındʒ] 动词 trans
| I | challenge | 
|---|---|
| you | challenge | 
| he/she/it | challenges | 
| we | challenge | 
| you | challenge | 
| they | challenge | 
| I | challenged | 
|---|---|
| you | challenged | 
| he/she/it | challenged | 
| we | challenged | 
| you | challenged | 
| they | challenged | 
| I | have | challenged | 
|---|---|---|
| you | have | challenged | 
| he/she/it | has | challenged | 
| we | have | challenged | 
| you | have | challenged | 
| they | have | challenged | 
| I | had | challenged | 
|---|---|---|
| you | had | challenged | 
| he/she/it | had | challenged | 
| we | had | challenged | 
| you | had | challenged | 
| they | had | challenged | 
无例句可用
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