Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
Quinine, cinnamon, and other useful substances are all derived of the bark of trees.
A. are
B. bark of trees
C. derived of
D. other useful substances
Đáp án C
derived of => derived from
Chủ điểm ngữ pháp: collocation
Derive from sth: chiết suất từ, nguồn gốc từ.