If you make a five-day journey __the Atlantic Ocean.A.across B.in C.through D.on

If you make a five-day journey __the Atlantic Ocean.A.across B.in C.through D.on
If you make a five-day journey __the Atlantic Ocean.
A.across B.in C.through D.on

If you make a five-day journey __the Atlantic Ocean.A.across B.in C.through D.on
If you make a five-day journey (across) the Atlantic Ocean,...
这是一个不完整的句子：
如果你跨大西洋做五天旅行...