[問題] SC 白勇chapter10 #9 (P296)

[waterdrop (林)]

因為我對正解的選項沒有疑惑 所以就不PO題了(實在很長)
我只是想請問對一個錯誤選項的理解方式

在錯誤選項(E)中
Because up to five percent of a car's fuel are wasted through
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
the increase in car-road friction when the tires are underinflated,

car owners properly inflating tires can substantially boost...

白勇的解釋說
half / some /...percent / part /plenty + of + N + V
V的單複數由N決定
所以應為
Because up to five percent of a car's fuel is wasted
                                          ^^^^
但我想請教這裡有沒有雙重所有格的問題呢
five percent OF a car'S fuel
還是這裡的of其實是慣用語的一部份??

感謝大家啦!!!

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推 dodohuang:這題沒有雙重所有格的問題喔  如果是 five percent of
→ dodohuang:fuel of a car's  就有這個問題了!
→ waterdrop:謝謝^^