II.1d luggage
2a departure
III.1a must
2b can
3c these
4b was built
5c had helped
6d B and C are correct
7c are taken
8d decorated
9d might
10a might
11a if she had seen
12b how many planets orbit the Sun
13b placing
14a spaces
15a homeless
IV. 1 to go.. not to stay
2 asking..to avoid..meeting
3 walking...keeping
4 show..to go...to buy
5 coming..standing...waiting
V.1c because of
2b being down
3c threaten
4b for
5c to
VII.1. If you don't exercis more, you can't have a good health
2 Since the water is contaminated people get more diseases
3 Because of breathing in unclear air, my uncle suffered from lung cancer
4 Sally thought aliens had very big heads and triangle faces
5 Mary has collected stamps since 2002
