29. The delivery service returned the package because the mailing _____ was incorrect and did not exist.
(A) traffic (B) weight (C) address (D) channel
The delivery service returned the package because the mailing _____ was incorrect and did not exist.
(A) traffic (n) 交通 (B) weight (n) 體重 (C) address (n) 地址 (D) channel (n) 頻道