The last choice, "Teens who sleep less than 5 hours a night suffer from more immune related illnesses according to a study released in 2015 by the American Journal of Medicine." It gives a source to where the information had been gathered.
Answer:
My mother said that she wanted her house to look clean and nice at Tet holidays.
Answer:
<u><em> a subordinate clause is a clause in a complex sentence that cannot stand alone as a complete sentence and that functions within the sentence as a noun or adjective or adverb A clause that cannot stand alone as a sentence, but functions as either a noun, adjective or adverb in a sentence.</em></u>
Explanation:
