Question

1.Past Indefinite Tense, Present Perfect, Past Continuous  or Present Perfect Continuous?
Little Mary came in. She … (eat) an ice-cream. 
I dropped my bag when I … (run) for a bus. 
I … (know) him for years.
She … (work) here for five years. 
I … (return) home yesterday. 

Answer 1

Привет! Я думаю так:
1) Little Mary came in. She was eating an ice-cream.
2) I dropped my bag when I ran for a bus.
3) I have known him for years.
4) She has been working here for five years.
5) I returned home yesterday.