6. ____ is difficult in the city center. There are too many cars there and too few parking lots.
(A)Park
(B)Parks
(C)Parked
(D)Parking

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統計： A(45), B(8), C(7), D(358), E(0) #2077775

詳解 (共 2 筆)

#3866657

. ____ is difficult in the city center

後面不用看

缺一個主詞

動名詞當主詞，結案 

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#3660884
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