Question

The train passed.... the dark tunnel.

Answer 1

Answer:

The train passed through the dark tunnel.

Answer 2

$\clubsuit \: \: \sf\bold{\green{through}}$

Step by step explanation:

• The train passed through the dark tunnel.

Additional Information :-

• Through can be used as a preposition or an adverb.
• When through is used as a preposition, it is followed by a noun.
• When it is used as an adverb, it is not followed by a noun.