37. Although not speaking English well, Mai decided to live in London.
38. Because of the heavy rain, the students arrived late.
39. My aunt adores surfing the Internet. She can even do it all day without being tired at all.
40. I had some days off last week. I could manage a trip to Ban flowers festival in Muong Village.
<span>The correct answer is A. Jim must drive to the North to study the northern lights. Here, the word North is supposed to be capitalized because it is a cardinal direction, and the word northern doesn't have to be capitalized because it is an adjective denoting the word lights. In B, the word German has to be capitalized. In C, McKinley is also supposed to be capitalized because it is the name of a mountain. In D, the word State doesn't have to be capitalized because it is a common noun, not a name.</span>