1 We have been here since ten years ago.------------------------2 I borrowed a book a week ago.------------------------------------3 The boy bought the computer two years ago.----------------------------------------------4 He has been in beijing for

Question

1 We have been here since ten years ago.------------------------
2 I borrowed a book a week ago.
------------------------------------
3 The boy bought the computer two years ago.
----------------------------------------------
4 He has been in beijing for ten years.
-----------------
5 It is two years since he died.
-------------------------------

Answer 1

1 We have been here for ten years
2 I have kept the computer for two years
3The boy bought the computer for two years
4 He has been in beijing since ten years ago
5 He has been dead for two years
我也刚学 还不完全肯定