is doing - this is a present continuous verb phrase.
is = present tense be verb
doing = the present participle of do.
A verb.
Cat is not even a verb. A verb is a doing word. Cat is a name of an animal so it is a noun. So no, its not a linking verb!
Yes chirp is a verb because a verb is a doing word and what you are doing is chirping.
Bowel movement is basically a name which means the discharge of faeces. Therefore it is a NOUN. It is not an action verb nor a verb at all. The act of doing a bowel movement is the verb.
The verb is is doing. It's the present progressive of do.
"Doing" is a verb in the present continuous tense, indicating that an action is currently happening.
It's a conjunction, not a verb. A verb is a "doing word..."
yes, a verb is a "doing" word so if you invade somethng you are doing something.
Manage is a verb as it is a doing word.
a verb is a doing word such as 'jump'.
Yes, collects is a verb. Verbs are doing words and when you collect something you are doing something.
Think about it.. if a verb is a doing word, then show me you doing some breathtakingly. You can't. It is an adjective.