書名：笛藤新Toeic必考單字600
版本：5/e
頁數：p.199 第十四題
題目：
____ as it does, I don't understand how anyone can depend on that
country's market to provide a safe investment.
(A) Fluctuated
(B) Fluctuating
(C) Fluctuation
(D) Fluctuate
疑問：這題的答案為(B) Fluctuating,雖然寫對了但是感覺怪怪的。看到題目時覺得
應該是用分詞構句來開頭。但是後句的主詞是 I ,應該不是fluctuating的主詞
而且前句又有一個as it does,想請問各位此題中fluctuating的主詞是什麼呢?
另外想請教在L30 p195中有一個例句如下:
No one is very comfortable investing in real estate while property
prices are fluctuating so much.
此句中comfortable後面接了investing ... so much，想請問為什麼會出現V-ing呢?
investing ... so much感覺不像是當名詞子句用，這句用來修飾什麼呢?