______ most of us got poor results. A. So difficult was the test that B. Was difficult so the test that C. So difficult the test was that D. So difficult was the test ______ most of us got47/100______ most of us got poor results. So difficult was the test thatWas difficult so the test that So difficult the test was thatSo difficult was the testGiải thíchChọn đáp án A