Question

Choose the answer that identifies the principal part of the verb used in the sentence.

The puppies are always [following] Eric around the house.

A. base form
B. present participle
C. past
D. past participle

Whoever answers this, can you explain why? I have a few questions like this, and I don't understand any of them.

Answer 1

B. present participle

Present Participle (Present Continuous) Tense forms:
(+) Subject + to be (linking verb) + V-ing + Object
(–) Subject + to be (linking form) + not + V-ing + Object
(?) To be + Subject + V-ing + Object