He _________Spanish for two years, and his fluency has improved significantly. A. has studied B. studied C. is studying D. will studyĐoạn văn5/40Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions. He _________Spanish for two years, and his fluency has improved significantly. has studiedstudiedis studyingwill studyGiải thíchChọn đáp án A