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1 because
2 as long as
3 although
4 so that
5 although
6 even if
7 until
8 while
9 because
10 Although
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Part 1
1 on
2 as
3 who
4 so
5 well
6 didn't
Part 2
1 - G
2 - A
3 - F
4 - B
5 - C
6 - D
Part 3
1 have walked
2 learnt
3 watches
4 playing
5 be done
6 impressed
7 surprisingly
8 cosumption
Part4
1 reduce => reduces
2 whom => who
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![](https://rs.olm.vn/images/avt/0.png?1311)
Part 1
1 if
2 after
3 that
4 so
5 should
6 from
Part 2
1b 2e 3a 4f 5c 6d
Part 3
1 conservationists
2 to take
3 hasn't provided
4 works
5 disappointed
6 achievement
7 polluted
8 dissolve
Part 4
1 will get -> get
2 amazing -> amazed
Part 5
1 use fresh water economically
2 school because the bus
3 they should keep
4 which is in this
Part 6
1 fond
2 watching
3 listened
4 or
Part 7
1T 2F 3T 4F
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a.
2 should
3 must
4 must / have to
5 don't have to
6 don't have to
7 should
8 mustn't
9 shouldn't
10 must / should
b.
2. You should have a rest.
3. Everyone will have to speak.
4. v
5. I had to stay in bed.
6. You mustn't park
7. v
8. People shouldn't answer