1.
If you _____ to your guns, you keep your position even though people attack or criticise you.
ISKTC
2.
If you open old _______, you revive a quarrel or problem that caused a lot of trouble in the past.
USNWOD
3.
A person who is very difficult to control and unpredictable is a _____ cannon.
OSEOL
4.
If someone drops a _______, they announce something that changes a situation drastically and unexpectedly.
LBLSMEBHO
5.
If you have to bite the ______, you have to accept or face something unpleasant because it cannot be avoided.
ULTELB
6.
If you have an axe to ______ with someone or about something, you have a grievance, a resentment and you want to get revenge or sort it out. (In American English, it is 'ax'.)