by in at on with to for they like swimmming()the sea用前面的介词填空

问题描述:

by in at on with to for they like swimmming()the sea用前面的介词填空

填 in ;
in the sea = 在海上;在海洋里;
句子的意思是:他们喜欢在大海里游泳;
at sea 也是词组,意思是:在海上;茫然无措;