The only word that could potentially be a compound noun is patents, but that has its own definition-a government meeting of some sort.
A compound noun would be a compound word that is also a noun, but there aren't really any compound words.
I know this doesn't really help, sry.
Answer:
I hope in the future, though I have my doubts, he will me forthright with such matters.
Explanation:
There are two commas because they represent breaks in the sentence. These are needed because, the part of the sentence "though I have my doubts" is basically a side comment. So, you add commas to show that.
I agree with ur answer....under the surface...because of the context " drilled into the ground "
C. The cyclists had ridden from one end of the island to the other.
hope this helps :)
