求解四道初二英语改错题(急!)改错1.Whenhaveyougonetothelibrary?-Threehoursago.2.Itistwohourssincehehasbeenhere.3.Thegirlhasfallenasleepsin9o'clock.4.Theyhavegottoknoweachotherfortenyears.

Question

求解四道初二英语改错题(急!)
改错
1.When have you gone to the library?-Three hours ago.
2.It is two hours since he has been here.
3.The girl has fallen asleep sin 9 o'clock.
4.They have got to know each other for ten years.

Answer 1

1.When did you went to the library?-Three hours ago.
2.It has been two hours since he has been here.
3.The girl has been asleep since 9 o'clock.
4.They have known each other for ten years.