27, boring
28, official
29, swimming
30, celebrations
31, C- lots
32, D – clean
33, A – live
34, A -has
35, B – there
36, D -are
37, C – for
38, B – reasonable
39, D – an accidental invention
40, B -1877
41, D – in a laboratory
42, A – a telegraph repeater
43, A – with a telephone needle and a recorder
44, B - machine