题目

PART TWO  LANGUAGE KNOWLEDGE SECTION  A Directions: Beneath each of the following sentences there are 4 choices marked A,B,C and D. Choose the one answer that best completes the sentence(25%). 21. Perseverance is a kind of quality and that is ______ it takes to learn English well.      A. what                               B. that                          C. which                      D. How 答案：A

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