Mark the letter A, B, C, or D on your answer sheet...

Câu hỏi: Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Unlike most modernist poets, ..... based on ordinary speech.

A. Robert Frost's poems were

B. the works of Robert Frost were

C. Robert Frost wrote poems that were

D. the poetry written by Robert Frost