It's regular as it ends in -ed - explained.
The past tense of row is rowed.
The irregular past tense for "grow" is "grew".
The words "irregular" and "regular" are not verbs and do not have past tense forms.
The past tense of explain is explained.
The past tense of cut is also cut. This makes cut an irregular verb as the past tense doesn't end in -ed.
the past simple is sang and past paticiple is sung
The past tense of the irregular verb "to take" is "took."
Blew is the past tense of blow. It's an irregular verb.
'Did' is the irregular past tense of 'do'. The past participle is 'done'.
Lie is an irregular verb and the past tense is lay.Lie is only an irregular verb.
Became is the irregular past tense of become.
The past tense is went.