题目内容：

1 Jack has ————finished his homework ———— an hour ago 2 Has the bus left————?Yes it
has ____ left.
3 He has lived in Nanjing _______the year before last
4 i have known him _______ we were children
5 it is about 10 years ______she left the city
(never ever already yet foe since)填空

优质解答

1.already since
2.yet,already
3.since
4.since
5.since