单选题 ______ you keep on practicing, you will certainly play it well.
A. Whereas B. Although C. As long as D. For

【正确答案】 C

【答案解析】[解析] 词义辨析题。只要你坚持练习，就一定能把它弹好。whereas，然而；although，尽管；as long as，只要；for，因为。