【題目】She has （擔(dān)心） her daughter (自從) she heard that she dropped out of school.

【答案】been；concerned/worried；about；ever；since
【解析】句意：從那以后她一直擔(dān)心她的女兒。be concerned/worried about對(duì)……感到擔(dān)心；ever since從那時(shí)到現(xiàn)在。由has可知用過(guò)去分詞構(gòu)成現(xiàn)在完成時(shí)，所以答案是been concerned about；ever since。

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