C．accepted

　　D．needed

　　解析：选D　根据上文“its been hard to enjoy the Christmas. Thanks for the laugh”可知，老板需要这份欢笑。need意为“需要”，符合语境。

　　19．A.luckily

　　B．eagerly

　　C．naturally

　　D．proudly

　　解析：选D　根据下文“I made those people smile after a long day at work”可知，“我”很自豪地站在窗子那里。proudly意为“自豪地”，符合语境。

　　20．A.because

　　B．but

　　C．although

　　D．if

　　解析：选A　句意：我的心里充满了快乐，因为我能够使那些工作了一天的路人露出微笑。根据语境可知，此处表示因果关系。because意为“因为”，符合语境。

　　Ⅱ.语法填空

　　(2016·河南天一大联考)I was visiting the Cape Verde Islands with some friends. Although it was a __1__ (wind) day, the water was clear and my friends were out on the reef. Going out to snorkel (潜泳), I __2__ (notice) that an ocean current had spread to the bay, pushing me towards rocks __3__ (cover) in sea urchins (海胆). Since I wasnt close to the shore, __4__ would have been a tiring exercise to swim against it, so, using the current, I made it back to shore in about an hour.

　　__5__ (lie) on the beach and out of breath, I heard a voice. A man, __6__ was one of the guys I had just met, was getting pushed past the rocks and would be quickly carried out to sea. No one else was close, __7__ I jumped into the water. Keeping a mark on all of the submerged rocks and sand bars (沙洲), I swam out to him.

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