答案是 C.having struggled
這個(gè)句型叫 Perfect Participle （完成式分詞）
這是固定的句型.
having struggled for months to find a job as a waitress
after having struggled for months to find a job as a waitress
after struggling for months to find a job as a waitress
上面三個(gè)句子有相同意思
現(xiàn)在分詞的完成式表示其動(dòng)作在謂語(yǔ)動(dòng)詞的動(dòng)作之前已完成.
例句：
Having finished her homework,the little girl began to watch TV.
做完作業(yè)后,這個(gè)小女孩開始看電視.
Having lived in Beijing for many years,Carter knew the city well.
（因?yàn)椋┰诒本┳×硕嗄?卡特對(duì)這個(gè)城市很熟悉.
百度對(duì)這個(gè)句型有詳細(xì)解釋：為什么用這句型句子的意思是迪娜，在掙扎了幾個(gè)月仍舊找不到一份飯店服務(wù)員的工作之后，終于接受被聘為附近的一家廣告公司的職員。上面指出現(xiàn)在分詞的完成式表示其動(dòng)作在謂語(yǔ)動(dòng)詞的動(dòng)作之前已完成從語(yǔ)境我們知道迪娜“找一份飯店服務(wù)員的工作”這件事已結(jié)束，所以用現(xiàn)在分詞是對(duì)的。