White is an adjective and so doesn't have a past form.
Past tense of wait is 'waited'
By is not a verb so it doesn't have a past form Buy is a verb. The past of buy is bought
Wove is a past tense - the past of the verb "weave".
It is already in past tense.
The past tense is reminded.
Sat is a past form. Sat is the past form of the verb sit.Sat is a past form. Sat is the past form of the verb sit.Sat is a past form. Sat is the past form of the verb sit.Sat is a past form. Sat is the past form of the verb sit.Sat is a past form. Sat is the past form of the verb sit.Sat is a past form. Sat is the past form of the verb sit.Sat is a past form. Sat is the past form of the verb sit.Sat is a past form. Sat is the past form of the verb sit.Sat is a past form. Sat is the past form of the verb sit.
The past form of "am" is "was" and the past participle is "been."
The past form of come is came.
The past participle of "form" is "formed."
The past form of "dig" is "dug."
The past form of "find" is "found".
The past form of stop (and also the past participle)is stopped.
The past form (and also the past participle) of plan is planned.
The past form of "slay" is "slew" and the past participle is "slain."
there is no past form of bus
The past form is 'sold'
what is the past form of forgive