Since you didn't italicize any word, I will just write every part of speech here.
Catching is a gerund/noun, fish is a noun, is is a verb, one is a number, of is a preposition, the is a determiner, oldest is an adjective, pastimes is noun.
Answer:
<em>The Germans called it the Weihnachtsbaum “Christmas Tree,” Christbaum “Christ tree,” or of course, “Tannenbaum” or “fir tree.” By the 15th century tree decorations started becoming part of the holiday celebration.</em>
Explanation:
im not sure of my answer (correct me if im wrong please)
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I think the main reason why the Great Wall was rebuilt in the fourteenth century is a will to keep out the Mongolian invaders from the north (answer B). It took place during the Ming dynasty which had quite a big problems with the invasions before.