For question 6, identify the adverb modified by the underlined adverbial phrase.

The highway extends far across the state.

The adverb modified by the underlined adverbial phrase "far across the state" is "extends."

The underlined adverbial phrase in the sentence is "far across the state." It modifies the adverb "extends" and answers the question "How far does the highway extend?"

To determine the adverb modified by the underlined adverbial phrase in the sentence "The highway extends far across the state," follow these steps:

1. Identify the underlined adverbial phrase: In this sentence, the underlined adverbial phrase is "far across the state."

2. Determine the adverb modified: The adverb modified by the underlined adverbial phrase can be found by considering the meaning or function of the phrase. In this case, the phrase "far across the state" gives additional information about the extent to which the highway extends.

3. Identify the adverb: The adverb modified by the underlined adverbial phrase is "extends," as it is the verb being modified by the phrase, indicating the distance or scope of the extension.

Therefore, the adverb modified by the underlined adverbial phrase "far across the state" is "extends."