Before (A) the nineteenth century, it (B) was rarely (C) to find organized systems (D) of adult education

20/50

Identify the one underlined word or phrase. A, B, C or D - that must be changed for the sentence to be correct.

Before (A) the nineteenth century, it (B) was rarely (C) to find organized systems (D) of adult education.

Before

Rarely

Systems

Giải thích

Đáp án: C

Cấu trúc: tobe + adj + to – V

rarely => rare

Tạm dịch: Trước thế kỷ XIX, thật hiếm để tìm kiếm các hệ thống có tổ chức của giáo dục người lớn.