請益今年郵政考試的考題^^
Catherine was________that she was always on top of her class back in her schoo
l days.
1 so diligent a student
2 a so diligent student
3 such a diligent student
4 a such diligent student
公佈答案為1
我想請問為什麼3不行呢？
such後面可接 a(an) +形容詞 +單數名詞不是嗎？
麻煩給予糾正指教
謝謝！！