16
51
Is this a sentence fragment?
By the time the Guerra Bianca, or White War,
ended in 1917, Italian and Austro-Hungarian
soldiers fighting for three years in extreme
conditions at altitudes of up to twelve
thousand feet.
yes
no

By the time the Guerra Bianca, or White War,  ended in 1917, Italian and Austro-Hungarian  soldiers fighting for three years in extreme  conditions at altitudes of up to twelve  thousand feet.

Explanation:

The underlined part is a fragment rather than a complete sentence.

This is one way to fix it:

Italian and Austro-Hungarian  soldiers had been fighting for three years in extreme  conditions at altitudes of up to twelve  thousand feet.

did , cooked , was reading , will do , will prepare , will read

explanation:

the underline word is basically like a prepositional phrase.