21.  A narrative scene shows owl-headed figures using a crescent-shaped knife to eviscerate a victim.

22.  A newsletter is regularly produced including excerpts from the electronic messages received and sent by children using the network.

23.  A number of chemists had experimented with the polymerisation of ethylene using catalysts.

24.  A number of exercises would be conducted using computer simulation, rather than actual troops.

25.  A nylon webbing strap is wrapped around the frame and is then tightened using a ratchet action of the clamp head.

26.  A particular branch, the Grammatical Shastra, was formulated using the Sanskrit vocabulary as a substratum, with no ambiguity whatsoever.

27.  A piece of dough was kept back after using the yeast and this is called leaven.

28.  A posting error can be corrected by using a correction or void key.

29.  A range of very attractive effects can be achieved using slip stitch and changing colour less frequently.