1 have been built
2 had been damaged
3 go
4 to get
5 is expected
6 was discovered
7 would see
8 would buy
9 will be travelling
10 sitting
12 not to tease
13 to take
14 haven't contacted - went
15 arrived - had already left
16 took
17 will pass
18 was watching - came
19 breaking
13 struck
V
1 to use => to using
2 eating => to eat
3 more healthy=> healthier
4 doesn't => doesn
5 aren't => isn't
6 go => going
7 how many => how much
8 improve => be improved
VI
1 If you hadn't been drunk last night, you wouldn't have got up late
2 If I brought an umbrella, I wouldn't have got wet
3 If you don't take a raincoat, you will be wet
4 If I weren't afraid of water, I could swim
