1, Mr Nam last ate sundwiches 2 weks ago
-» the last time.....Mr Nam ate sandwiches was 2 weeks..............
-» Mr Nam hasn't...eaten sandwiches for 2 weeks................
-» It's 2 weeks since Mr Nam last ate sandwiches....................
2, How long have you bought this now house?
-» when..did you start to buy this now house?.....................
-» how long is it ....since you bought this now house?...............
-» how long ago ...did you buy this now house...............
3, When I saw him , he was walking a long the treet
-» I....saw him walking a long the street.....................
4, I began smoking 2 years ago
-» I' ve....smoked for 2 years............................
-» It' s....2 years since I smoked.........
5, Have you used your computer for a long time?
-» Did......you start to use your computer a long time ago? ......