Question

Identify the bold verb form in the sentence.

I was walking to the market when my friends rode by.


past perfect progressive
past progressive
future progressive
past perfect

Answer 1

I was walking = past progressive
my friends rode = simple past

Answer 2

The answer is B: past progressive

I was walking to the supermarket when my friends rode by. (Two actions)

First:  I was walking to the supermarket ( this shows an action in progress. I was in the middle of walking to the supermarket.)

Second: when my friends rode by. (another action happened in the middle of the first action.)

Both actions occured at the same time, but one action began earlier and was in progress when the other action happend.