Past simple and Past continuous

When I was younger I was feeding my dog when it [blank_start]bit[blank_end] me. I bought a new dog. One day I was [blank_start]doing[blank_end] my homework while the dog was playing outside, when suddenly it [blank_start]began[blank_end] to rain. I was just finishing my homework when the dog [blank_start]jumped[blank_end] on me and I spilled coffee all over my work. I bought a new dog.

The past participle (third column) of the word 'bite' is?

Which sentence is NOT correct.

On Monday I was [blank_start]waiting[blank_end] for the bus when a fast car [blank_start]skidded[blank_end] around the corner and almost [blank_start]hit[blank_end] me. I've [blank_start]been[blank_end] going to that bus stop for years and nothing like that has [blank_start]ever[blank_end] happened. The man next me was [blank_start]reading[blank_end] his newspaper when it happened. He's waited at that bus stop for [blank_start]over[blank_end] ten years but I don't think he will continue.

Choose the verbs that are past participles (third column)

Choose the verbs that are past tense. (not past participle)

The receptionist [blank_start]___________[blank_end] (welcome) the guests and [blank_start]______________[blank_end] (ask) them to fill in the form.

Marvin [blank_start]__________[blank_end] (come) home, [blank_start]__________[blank_end] (switch) on the computer and [blank_start]__________[blank_end] (check) his emails.

The boys [blank_start]__________[blank_end] (swim) while the girls [blank_start]__________[blank_end] (sunbathe). .