20. _____ I see him in person _____ he has arrived safely.
(A) When… that I will believe only
(B) When only… I believe will
(C) Only when…will I believe that
(D) That only…when I will believe
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統計: A(30), B(10), C(108), D(13), E(0) #3102658
統計: A(30), B(10), C(108), D(13), E(0) #3102658