it might be
not
Had held is correct.
No. The 2008 Olympics - is plural so the verb phrase - was held - should be plural.The 2008 Olympics were held in Beijing.
"How are you" is a correct sentence.
Yes, this sentence is correct.
justification by faith
That is the correct spelling of "faith" (belief, confidence).
You are palpitating. This is a correct sentence.
Yes, the sentence is correct. It expresses the belief held by many that monotheism is the only way of life.
I am not entirely sure if it is. . . I would reword it to "The party was at my friend's house last." No, "kept" is not the correct verb, "held" should be used.
That sentence is grammatically correct.
no it is not a correct sentence.