问题
单项选择题
His effort finally(), so he was very excited.
A. paid for
B. cost
C. is spent
D. paid off
答案
参考答案：D
解析：
paid for支付；cost花费；is spent被花费；paid off赢利、得到回报。D项符 合句意。
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His effort finally(), so he was very excited.
A. paid for
B. cost
C. is spent
D. paid off
参考答案：D
解析：
paid for支付；cost花费；is spent被花费；paid off赢利、得到回报。D项符 合句意。