1 . He spent 7 days in the wind and snow cold and ________ (hunger).(所给词的适当形式填空)

2 . Besides，whenever you are ________(hunger)，you can taste whatever food you like. (所给词的适当形式填空)

3 . They had a ________(hungry) to explore the universe and discovered the truth. (所给词的适当形式填空)

4 . Ask yourself if you are really ________ (hunger), or have a glass of water to see if you are thirsty instead of hungry. （所给词的适当形式填空）