1 D
2 A
3 B
II
1 B
2 A
III
1 N
2 D
3 D
4 C
5 A
6 C
7 D
8 A
9 B
10 A
IV
1 has been
2 invited
3 came - was cooking
4 to buy
Part B
1 C
2 D
3 B
4 C
5 C
II
1 It is a day that is meant to raise awareness and appreciation about the Earth's natural environment
2 In 1970
3 Yes, it did
4 C
5 There are more than one hundred and seventy five countries
Part C
1 Despite working hard, he can't support his large family
2 If you don't study harder, you will fail the final exam
3 My brother said that he wanted to go on holiday the day after
4 Most buildings in the city have been destroyed by the earthquake
5 We haven't seen her for 2 months