12. The benevolent doctor has been dedicated _______ medical aid to people in impoverished circumstances for
decades.
(A) to provide
(B) to providing
(C) herself to provide
(D) herself to providing
答案:登入後查看
統計: A(30), B(62), C(20), D(22), E(0) #1772749
統計: A(30), B(62), C(20), D(22), E(0) #1772749