10. What time do we need to check ___ at the conference?
(A) about
(B) in
(C) down
(D) with

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統計: A(13), B(99), C(8), D(9), E(0) #3503449

詳解 (共 1 筆)

#6591019
check ___ → 是一個動詞片...
(共 123 字,隱藏中)
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