Another two pupils —— swan across the big lake last week{success的适当形式}

题目

Another two pupils —— swan across the big lake last week{success的适当形式}

答案

这里主语是Another two pupils,谓语是swan across ,宾语是the big lake,
last week是时间状语
既然主谓宾都已齐全,就需要的是状语来修饰swan across ,所以用副词形式successfully;成功地