Sold is a verb. It's the past tense of sell.
Verb have is the helping verb sold is the action verb
Bruise is a verb. It is a regular verb
There is no verb of 'regular'. regular is either a noun or a adjective
The regular verb phrase in the sentence is "was opening".
"Answer" is a regular verb. In the past tense, it becomes "answered" by simply adding "-ed" to the base form of the verb.
When used as a verb, the word heart is a regular verb.
Broadcast is a regular verb.
It's a regular verb.
Yes, "study" is a regular verb.
The verb to learn is a regular verb.
The regular verb for mop is Mo