Answer:
Use the "I let out a sigh-" one, they both make sense but the first one is more comprehensible to other readers and its simple.
Explanation:
The man learned Spanish easily and quickly. But sadly not many people appreciated his Spanish knowledge. Quickly he realized that people must learn to appreciate Spanish culture more. Slowly he realized what he must do! That was the day the man decided to go back to school to become a Spanish teacher.
A verbal expression is the communication of your beliefs or opinions
D because they are able to move previously
The answer is B. Although it may seem the other answers are correct as well, in fact they are not. A 'complex paragraph' is indeed one which explains multiple sides of an issue, but favors one, thus only one main topic is represented. It doesn't really matter where the topic sentence is placed - it can be anywhere in the paragraph. However, it is traditionally placed in the first sentence, although that rule isn't written in stone - the topic sentence can also be placed at the end of the paragraph. Therefore, we are left with only one option, and that is B, 'a paragraph should have one main topic'.