1. I have been predicted that an _______ depreciating Taiwan dollars
will stimulate exporting business in Taiwan.
(A) increased (B) increasing (C) increase (D) increasingly
答案為(B)
想請問為什麼不是(D)，用副詞increasingly修飾depreciating?
2. Please present the VIP card, when ______ charges to your room account
or making a reservation for sporting facilities.
(A) signature (B) signing (C) signed (D) sign
答案為(A)
想請問答案為什麼不是(B)signing，對等連接詞or後接making，前面動詞不是應該
選signing才對等?
以上兩題皆為網上舊多益題目，還希望各位先進幫忙解決我的疑問。
謝謝大家。

Q1＆2答案都有錯。1. (D)increasingly正解。indefinite article不定冠詞 “an" + Adv. "increasingly" + Adj. "depreciating" + Noun "NT dollar" (持續不斷貶值的新台幣)Taiwan dollars2. (B) signing 正解。when (此處為prep. 介系詞)+ Gerund 動名詞 “signing”, 後面 or "making"...是parallel structure