Question

Past continous lub past simple

It was past midnight when Helen(arrive) home.She (close) the door quietly because her parents (sleep) upstairs.As she (take off) her coat,she(see) a letter on the floor with her name on it.
She (open) letter and (read) it.

Answer 1

It was past midnight when Helen arrived home. She closed the door quietly, because her parents slept upstairs. As she took off her coat, she saw a letter on the floor with her name on it. She opened letter and red it.

Answer 2

Arrive - arrived 
close - closed 
sleep - were sleeping
take off - took off
see - saw
open - opened 
read - was reading