1. cannot help (feeling), unbearably, awfully, irresistibly
2. must not ..., should not ...
3. must ..., have to ..., ought to ...
4. cannot, unable to
5. not
1. thing, matter
2. incident, occurrence, event, something serious, trouble, crisis
3. circumstances, situation, state of affairs
4. work, business, affair
5. after an inflectable word, creates a noun phrase indicating something the speaker does not ...