Помогите расставить артикли: определенный, неопределенный либо нулевой.: 1. they are looking

Помогите расставить артикли: определенный, неопределенный либо нулевой.: 1. they are looking for___ man with____ long dark heir. He's armed and dangerous
2. ___ software and services represend one of ___ fastest growing sectors of ____ computer market in ____ Eastern Europe. 3. I've been to ___ Brazil and argentina but I've never been to ___ USA. 4. ___ crimes still exist at___ present stage of ___ social development. 5. No state may pass ___ law contrary to ___ US National Constitution.