Homework correction
[1] ANSWERS:  [1] I haven't seen my uncle __ since ___ last Christmas.    [2] We have been in the same class __ for __ 2 years.    [3] We have lived here __ since _ March of 2010.    [4] He has been my teacher _ since _ May.    [5] They have studied web design __ for ___ 3 months.    [6] Facebook has been popular ____ for ___ 5 years.    [7] I have had my iPhone _ since _ February 14'th.    [8] My city has had a subway system __ for ___ 3 decades.    [9] Humans have travelled in space _ since __ 1964.     [10] That song has been #1 on the charts __ for _ 3 weeks. 
 
[2] ANSWERS:  [1] How long have you ___used__ your smart phone?    [2] How long has your mom __ driven ___ that car?    [3] How long has he ____been____ President of America?    [4] How long have they ___ studied ____ English at this school?    [5] How long have you ___ played _______ Candy Crush Saga phone game?    [6] How long has your little sister ___ saved ____ her money for a new bike?    [7] How long have you ___ known _______ me?    [8] How long have you ___ had _______ your pet dog?    [9] How long has he ___ practiced _______ TaeKwonDoe (martial art)?    [10]How long have we ___ worked ______ together at this job?