Answer:
Plagiarism is unethical for three reasons: Firstly, it is unethical because it is a form of theft. By taking the ideas and words of others and pretending they are your own, you are stealing someone else's intellectual property. Secondly, it is unethical because the plagiariser subsequently benefits from this theft.
Explanation:
HI,
The answer could be A. The drone model was built by Tom all by himself or C. The drone model was being built by Tom all by himself
The answer is c, all marines In France
'us' is the indirect object in the sentence.