They ____ great difficulty saving up money for a house.18/64Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions They ____ great difficulty saving up money for a house.achievedincurredfoundhadGiải thíchĐáp án : D Cấu trúc “have difficulty (in) doing something”: gặp khó khăn trong việc làm gì