适当形式填空
根据句意和语法要求，用括号中所给单词适当形式填空。
One of my_____________(hobby) is to collect stamps.
The novels written by Mo Yan are well worth __________(read).
Do you know how ___________ (make) a decision?
If you can answer all the questions      (correct), you will get a big prize.
Millie has difficulty _____________ (make) the decision.