Pretty sure A is the answer.
"We the people of the United States, in order to form...."
<span>Choice (a) is the correct answer. The merchants were only allowed to trade with the island of Macao. The other islands were closed off to the merchants because of their relationships with the mainland of China and its people.</span>
B is correct, "<span> Christina and I went to the same summer camp for years (since we were 8)" </span>parentheses are used when you have some extra information you want to add, but its not completely necessary. Like how they started going to the same summer camp when they were 8, you can still read the sentence fine without it, but it's a nice piece of information.
Answer:
We should appreciate the teachers as the spend hard work on us!
Explanation: