3. ____ at the peak of Alishan, the hikers were amazed by the beautiful sunrise.
(A) They arrived
(B) Before arriving
(C) Upon arriving
(D) When they were arriving

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統計： A(0), B(1), C(1), D(4), E(0) #4066765

詳解 (共 1 筆)

#7623280
考點 分詞構句與 「Upon / On...
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