Answer:
a)<u> The trip</u> to <u>the mountains</u> was a great experience.
b) <u>My friends</u> and I left at dawn.
c) We travelled in <u>a big and comfortable van</u>.
d) We hoped to arrive at <u>our destination</u> before dark.
e) <u>The van</u> headed towards the highway, and we reached <u>the base of</u>
<u>the mountain</u>
Explanation:
Noun phrases are a group of words that consist of a noun and its modifier. This is a common way that nouns are used in sentences. We can have pre-modifiers that come before the word being modified and post modifiers that come after the modified word. In the sentences above, the pre-modifiers were mostly used.
In the first sentence, the article, 'the' was used to modify the nouns, 'trip' and 'mountain'. In the second sentence, the determiner, 'my' was used to modify the noun, 'friends'.