根据句意，在答题卡标有题号的横线上，写出括号内所给单词的适当形式：
Sometimes, it is very difficult to make correct ____________ (decide).
His poor memory is really a _____________ (advantage) to him.
What an ____________ (enjoy) journey they had the day before yesterday!
Of all the players, the one who jumps ____________ (far) can win a medal.