关于since,that,when,before的英语选择题--Alice,didyoureditormakeaphonecalltoyouthenextday?--No,itwasafortnighthegavemeasecondcall.A.sinceB.thatC.whenD.before请详细解释此题各个选项,并且总结一下用法

Question

关于since,that,when,before的英语选择题
--Alice,did your editor make a phone call to you the next day?
--No,it was a fortnight_____he gave me a second call.
A.since B.that C.when D.before 请详细解释此题各个选项,并且总结一下用法.（应为每次遇到这样的题目都很纠结,尤其选项A和D.）非常谢谢.

Answer 1

选D.No,it was a fortnight before he gave me a second call .
只要知道选项代入句子后什么意思,或是否和前句照应就行.