Complete the text with for or since. add the time exercises to the table in exercise 2. Упр3,4

Ex 3

FOR: 1 4 5

SINCE: 2 3 6

Ex 4 = свои варианты, сколько лет ...

I have known my teacher since last year.  // for 5 months.

I have been in this class for 3 years.  // since 2017.

I have had a mobile phone for 2 years.

I have lived here for 5 years.  // since 2014.

I have understood English for one year.  

I haven’t had an exam for 2 months.