Homework 
Fill in the blanks in the sentences with either "for" or "since" 
 [1] I haven't seen my uncle _since__ last Christmas.  [2] We have been in the same class ________ 2 years.  [3] We have lived here ________ March of 2010.  [4] He has been my teacher ________ May.  [5] They have studied web design _________ 3 months.  [6] Facebook has been popular _________ 5 years.  [7] I have had my iPhone _________ February 14'th.  [8] My city has had a subway system ________ 3 decades.  [9] Humans have travelled in space _________ 1964.   [10] That song has been #1 on the charts ________ 3 weeks. 
 [2] Fill in the blanks in the sentences with the correct verb in the Past Participle form. 
work/  to be/ study/ have/ use/know/practice/ save/play/ drive 
  [1] How long have you ___used___ your smart phone?  [2] How long has your mom ___________ that car?  [3] How long has he _____________ President of America?  [4] How long have they _____________ English at this school?  [5] How long have you ______________ Candy Crush Saga phone game?  [6] How long has your little sister __________ her money for a new bike?  [7] How long have you ____________ me?  [8] How long have you ____________ your pet dog?  [9] How long has he _____________ Taekwondo (martial art)?  [10]How long have we ____________ together at this job?