In the following questions, sentences are given with blanks to be filled in with an appropriate word(s). Four alternatives are suggested for each question. Choose the correct alternative out of the four as your answer.

They reached the railway station before the train ………..

Options

A. had been left
B. left
C. was leaving
D. had left

Answer

D

Explanation

Here, Past Per. Tense- had left is the right usage.