Smack is a regular verb. Drink and do are irregular.
yes
im not sure
"Think" is an irregular verb. In the past tense, it changes to "thought" instead of following the regular -ed pattern.
The main verb of the sentence is "has gone missing."
Bruise is a verb. It is a regular verb
There is no verb of 'regular'. regular is either a noun or a adjective
has gone missing
No, it is not. It can be a noun (hit, kiss) or a verb (to strike or hit). In the slang term smack talk, it is a noun adjunct.*It can, arguably, be an adverb meaning "directly" in the form he fell smack on his head.
"Answer" is a regular verb. In the past tense, it becomes "answered" by simply adding "-ed" to the base form of the verb.
Was opening is the verb phrase.Open is a regular verb.
No, it is not a verb. Tea is a noun, a drink, or an occasion to drink it.
Yes it can be a verb as in "drink and be merry". However, it can also be a noun as in "please get me a drink".