Словообразование, помогите

1. Journalists should not be encouraged to uncover _______________facts relating to celebrities in the hope of grabbing the public’s attention. (REPUTATION)

2. The _______________ over the UK’s membership of the EU may cause investors to reduce or freeze their planned investments up to 2017. (CERTAIN)

3. By interpreting ______________expressions we read emotional messages and decide whether a person is happy, frightened, angry or nervous. (FACE)

4. American balloonist Steve Fossett who is making rapid headway across the South Atlantic in his latest attempt to fly solo around the world says, "It's ______________dangerous, yes, but I believe I can make it". (FRIGHT)

5. Even most powerful countries are facing the ever-_______________ threats from hackers and cyber weapons and the challenges from threats in cyperspace. (INCREASE)