Du Beke is after your blood after getting that one wrong. This reminds me of a haiku:

   Strictly Come Dancing
   Fleet of foot yet simple minds
   Waltzing near a cliff

You're down to two lives with two questions to go. Is your luck changing for the worse? Are the stormy clouds crowding your underpants, as the old saying goes? Here's Question 6.

I was trained to make explosions from washing up liquid, birthday cards, a pipe cleaner, ______ _______.

   battery acid and a watch
   Semtex and a detonator