circle the letter which is pronounced differently from the others: 
1. a) window    b) socialise  c) join  d) netlingo
2. a) basic    b) curious   c) minority   d) compliacated
3. a) hand   b) hour   c) hat    d) horse
4. a) define  b) detest   c) best   d) relax
giúp em vs ạ :(