单选题
It was at the very beginning __ Mr. Fox made the decision ______ we should send
more firefighters here.
A、
when, which
B、
when, that
C、
then, so
D、
that, that
【正确答案】
D
【答案解析】
[解析] 第一个that用于强调句，第二个that引导同位语从句。故本题答案为D。
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