"Complete the sentence with the correct option considering what you learned in lesson 8 - Narrative Tenses."
They had to work all morning because it ______ so much in the night.
a. had snowed
b. snowed
c. was snowing
The correct option to complete the sentence is:
a. had snowed
So the complete sentence would be: "They had to work all morning because it had snowed so much in the night."