He was much more thorough in his studies than the rest of his class and it was for this reason（） he made such great progress.
He was much more thorough in his studies than the rest of his class and it was for this reason（） he made such great progress.
A、why
B、how
C、that
D、for
正确答案：C
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时间：2025-12-03 23:26:41