Today we delivered the above consignment（）board SS “Hardi” which will sail for your port tomorrow.

Today we delivered the above consignment（）board SS “Hardi” which will sail for your port tomorrow.
正确答案：on
解析:本题考查介词 on 的用法，on board 就是“装运到船上”。全句意思是：今天我们已将货物装上“哈迪”号轮船，该船将于明天发往你方港口。