单选题
I didn't go to his party last night, because _________ I changed my mind.
A、
on a second thought
B、
on the second thought
C、
on second thoughts
D、
on the second thoughts
【正确答案】
C
【答案解析】
[解析] 本题考查固定用法。on second thoughts意思是“经再三考虑之后”。
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