書名:怪物講師教學團隊的多益3回全真模擬試題
版本:2/e
頁數:p.23 第122題
題目:
Items____ behind by passengers in the cabin will be retained at the Lo
st&Found office at the arrival terminal for three business days before being t
ransferred to the local law enforcement.
(A) having been left
(B) have been left
(C) that have left
(D) are left
疑問:為甚麼是A而不是B