根据句意用括号里所给词的适当形式填空，每空一词。
I think keeping worries to yourself can only make things even _____________ (bad).
Keeping your ____________(worry) to yourself can make them worse.
The leader feels very tired for he has to make many important ____________ (decide)
The car accident was caused by the young driver’s _____________(care)
You will be_____________ (require) to take a test if you want to get this job.