Trắc nghiệm: Mark the letter A B C or D to indicate the sentence that best combines each pair of sentences in the following questions,Mark the letter A; B; C; or D to indicate the sentence that best combines each pair of sentences in the following questions,Mark the letter A. B. C. or D to indicate the sentence that best combines each pair of sentences in the following questions.,Mark the letter A. B. C or D to indicate the sentence that best combines each pair of sentences in the following questions.,Mark the letter A. B. C or D to indicate the sentence that best combines each pair of sentences in the following questions,. Mark the letter A. B. C or D to indicate the sentence that best combines each pair of sentences in the following questions.,Mark the letter A. B. C. or D to indicate the sentence that best combines each pair of sentences in the following questions,Mark the letter A B C or D to indicate the sentence that best combines each pair of sentences in the following questions.