J. K. Rowling writing Harry Potter at a local caf because she could not afford to heat her home.
A. started
B. starts
C. has started
D. had started
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(答案→)A. started
B. starts
C. has started
D. had started
解析：A 考察动词时态。句意：J.K Rowling在当地的一家咖啡馆里开始写《哈利波特》的袁咏仪是她无钱支付家里的供暖费用。根据because she could not afford to heat her home可知start这个动作发生在过去，所以使用一般过去时。故A正确。