Use one of the words or phrases below [bad word] each of these sentences from a BBC news report.

Note that you may have to change the form of a word [bad word] the sentence correctly.

the authorities / blew up / security concerns / the backbone of / ski slopes

1.
And, in another mysterious and high-profile case in 2003, US pizza delivery man Brian Wells was killed when a collar bomb he was wearing __________ after he robbed a bank in Pennsylvania.

2.
Saif al-Islam, one of the Libyan leader's sons, sought to rally regime forces earlier on Tuesday by making a defiant appearance and claiming the regime had broken ___________ the rebel advance.

3.
His beating-up by security forces shows that he has hit home and that __________ tolerance for dissent is touching zero.

4.
Glasgow Caledonian University's Moffat Centre, which monitors visitor attractions, said Scotland's __________ benefited most from heavy snowfalls.

5.
Brazil had been scheduled to play African champions Egypt on Tuesday 6 September, but the game was cancelled due to __________ in Cairo.