If we ______ our trip in advance, we would have booked the seats.
Ashould have planned
Bhad planned正確答案
Cplan
Dplanned
答案與詳解
為什麼答案是 B
第三類條件句if子句須用過去完成式had planned，對應主句would have booked，表示與過去事實相反的假設。
載入中…
第三類條件句if子句須用過去完成式had planned，對應主句would have booked，表示與過去事實相反的假設。
