Question 21: A. their projects B. its own projects C. those projects D. your own projectsĐoạn văn21/40Mark 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 18 to 23. their projectsits own projectsthose projectsyour own projectsGiải thíchChọn đáp án D