43. _______ the poem a second time, the meaning will become clearer to you. (1996-上海)
A. Your having read B. While
C. If reading D. When you read
44. ____ much advice I gave him, he did exactly what he wanted to do. (1996-上海)
A. How B. Whatever
C. However D. No matter
45. If we work with a strong will, we can overcome any difficulty, ____ great it is. (1995-全国)
A. what B. how
C. however D. whatever