14/12/21 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. The ozone layer helps___________us from the sun's rays. A. stopping B. protecting C. avoiding D. taking Lời giải Help doing sth; protect so from sth Đáp án B. Click để xem thêm...
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. The ozone layer helps___________us from the sun's rays. A. stopping B. protecting C. avoiding D. taking Lời giải Help doing sth; protect so from sth Đáp án B.
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