it's

 
Pronunciation: /ɪts/

contraction

  • it is: it’s my fault
  • it has: it’s been a hot day

Grammar

This is an occasion where the use of the apostrophe can cause problems. The rule is as follows:itsThis is the possessive form: His face had lost its boyish roundness. it'sThis is the short form of it is: It’s a sign of growing up.