C is correct because we say “That’s a fluffy sheep” when singular and “I like those sheep over there” when plural. Also, we dont say mouses, we say mice. We say children, not childs. We say halves, not halfs. So even by process of elimination, C is the right answer.
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Answer:
2 - The concert has been postponed
3 - The computer is currently being used
ect ect ect
