Trắc nghiệm tổng hợp ôn thi tốt nghiệp THPT môn Tiếng Anh Chuyên đề V. Đọc điền khuyết cấu trúc câu có đáp án

A. they have been exposed B. if they have been exposed C. having been exposed D. to expose

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Mark the letter A, B, C, or D on your answer sheet to indicate the correct option that best fits each of the numbered blanks from 19 to 23.

they have been exposed

if they have been exposed

having been exposed

to expose

Giải thích

Chọn đáp án C