The girl had a short rest and did her homework ______ she reached home.A.after \x05B.before \x05C.when \x05D.since要合理的理由,

The girl had a short rest and did her homework ______ she reached home.A.after \x05B.before \x05C.when \x05D.since要合理的理由,
The girl had a short rest and did her homework ______ she reached home.
A.after \x05B.before \x05C.when \x05D.since
要合理的理由,

The girl had a short rest and did her homework ______ she reached home.A.after \x05B.before \x05C.when \x05D.since要合理的理由,
这题选C
首先排除B和D,意思不对
其实就是在A和C中间选一.从意思上来说,A和C都可以,这里就是时态的差别了
假如用after的话,表示从句中reach home这个动作,是发生在have a short rest 和do homework之前,是过去的过去,所以要用过去完成时：
The girl had a short rest and did her homework after she had reached home.
所有只有C选项意思和时态都可以,when 表示两个动作同时发生,从句和主句的时态是一致的（除非表示将来时）.

选C，因为这个是时间状语从句，意思是当她到达家的时候，A和B不能引导从句的，D是引导现在完成时的

after,选A 到家以后 when用于连接两件极短时间同时发生的事

虽然汉语我们说到家后做。但是在英语中比较短暂的先后应该用when 而不是after，只有之后很长一段时间，或者特别强调次序的时候才用after after reach