Supposed is the past participle of suppose.
I/you/we/they suppose. He/she/it supposes. The present participle is supposing.
I suppose you mean swimpast participle of swim is swumswim /swam /swum
The past participle of "do" is "done." The past participle of "have" is "had."
The present participle of "suppose" is "supposing."
The past participle of "am not" is "have not been."
The past participle of "do" is "done."
The past tense of "have" is "had," and the past participle is also "had."
The past participle of the word "have" is "had."
The past participle of "am, are, is" is "been."
The past participle of "will" is "willed."
The past participle is thought.
The past participle of "to" is "been." The past participle of "be" is also "been."