Answer:
Dear Mr. Howard, I had purchased a box of cookies from your online shopping website. When I got the delivery and opened it, I found that they were all crushes and as a result, I could not eat them and throw them in the bin. I would be highly grateful if could look into the matter and make an arrangement for a refund for my purchase amount. I would request you to take immediate action.
Explanation:
I believe that: <span>Sir Gawain tells King Arthur that "King Arthur will be killed if he fights Mordred the next day" A)</span>
the answer is: We had seen an elephant!
A is wrong you wouldn't say "is" you would say are.
B is wrong to because "was" is not the correct verb to use.
D is wrong because key, should be plural, keys
C is correct, because it has subject and verb agreement.