1. On our way to the library, we witnessed (or saw) a flock of birds flying.
2. Lying on the desk, was tom student’s paper.
Subordinate clause : part of the sentence that is independent from the main clause, usually separated by conjunction. since you provide no option, let's assume the photo is about a player who surrounded by his teammates after he scored a home run. The sentence could be : 'The teams and fans roared when he delivered a homerun'
hope this helps
Answer:
Your answer is D. "Have you read the article by the candidate who won the election?"
The noun in this sentence which is uncountable, meaning that it names something that cannot be counted is the noun water.
You cannot count how many waters there are - it is uncountable. The other nouns, students and pitcher are countable, so they cannot be the correct answers, but rather water is.