Question

Use helping verb The train ,_________arrived before I reached the station​

Answer 1

Explanation:

→"reached" is the answer as the 1st verb "had left" is the past of the past, so reached is in the past and the train left before they reached the station. ... The train had left before they reached the station.

•I think it will be helpful

Answer 2

Answer:

the train was arrived before I reached the station.