英语时态的简单问题4.The American Civil War lasted four years the North won in the end. A.after B.before C.when D.then 可不可以填then【 然后（介词）】北方最后赢了?

英语时态的简单问题4.The American Civil War lasted four years the North won in the end. A.after B.before C.when D.then 可不可以填then【 然后（介词）】北方最后赢了?
英语时态的简单问题
4.The American Civil War lasted four years the North won in the end.
A.after B.before C.when D.then
可不可以填then【 然后（介词）】北方最后赢了?

英语时态的简单问题4.The American Civil War lasted four years the North won in the end. A.after B.before C.when D.then 可不可以填then【 然后（介词）】北方最后赢了?
不可以,then当然后讲是副词,如果加一个and,then从语法上勉强说得过去,但意思不对

B.before

B