以下均為同一本書，因為實在看不太懂解析...故來請教各位神人，謝謝！
書名：怪物講師多益5回全真模擬試題
頁數：p. 20
題目一：（第一回）第121題
The increasing popularity of e-books and e-readers
is affecting the publishing industry in various ways,
one of — is the rapid decline in the sales of printed books.
A. them
B. it
C. which
D. that
疑問：正解為C，想請問A為什麼不行呢？
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書名：怪物講師多益5回全真模擬試題
頁數：p. 109
題目二：（第三回）第112題
—— interested in purchasing group tickets for
the Lakers games should call the Lakers Group
Services office or email a Group Events Specialist.
A. Anyone
B. Whoever
C. Who
D. Those who
疑問：正解為A,想問B/C為什麼不行呢？
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書名：怪物講師多益5回全真模擬試題
頁數：p. 110
題目三：（第三回）第120題
A fine of $100 will be imposed upon any drivers —— the car
is illegally parked downtown during the holiday parade.
A. which
B. whose
C. of which
D. of whom
疑問：想問為什麼是D？我看不懂解析...
「還原後可發現為of any drivers,也就是the car of any drivers」？
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書名：怪物講師多益5回全真模擬試題
頁數：p. 110
題目四：（第三回）第122題
The Eisenhower Foundation will soon —— its funding of
external scientific research into several new domains,
including genetics and endangered languages.
A. allocate
B. finance
C. expand
D. comprise
疑問：答案為C,想問這題的上下文可以選A嗎？
可以解釋成「基金會很快將"分配"其外部科學
研究資金到一些新的領域」嗎？還是不能這樣解釋或使用？