1.There were dirty marks on her trousers______ she had wiped

1.There were dirty marks on her trousers______ she had wiped her hands.
A.where B.which C.when D.that
请问这是定语从句还是地点状语从句?为什么?
2.Itwas evening _____we reached the little town of Winchester.
A.that B.until C.since D.before
请问这是强调句还是时间状语从句?为什么?
3.I amsorry that I have caused somuch trouble.请问这是什么从句?
4.This is the case _______ he’s had all his money stolen.
A.when B.where C.that D.on which
请问这是同位语从句还是定语从句?为什么?
5.请帮忙翻译此句：I hope that the little that I have been able to do does good to them all.