单选题
We were stuck by the extent ______ which teachers' decisions served the interests of the school rather than those of the students.
A、
to
B、
for
C、
in
D、
with
【正确答案】
A
【答案解析】
[考点] 句法结构。
[解析] 本题测试定语从句前加介词的结构。extent和to属于固定搭配，先行词extent属定语从句中状语部分，故应选择介词to。
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