请问这题的详细解释：The ship took machines and other goods back to the port ____ it had set off.

题目

请问这题的详细解释：The ship took machines and other goods back to the port ____ it had set off.
The ship took machines and other goods back to the port ____ it had set off.
A.from which B.to which C.which D.in which

答案

选A
句意：这艘装满机器和货物的船回到了它当时出发的港口.
which指代的是港口,恢成正常语序就是：it had set off from the port(它从港口出发),然后把the port用which指代再提前后,from应保留!