1 friendship
2 peaceful
3 compulsory
4 tropical
5 separated ( bị động)
6 modern
7 equally (treat : v cần adv: equally)
8 industrial
9 convenient
10 fashionably
11 official
12 introduction
13 division
14 symbolize
15 suitable
16 boring
17 examinations
18 invite
19 cultural
20 carelessness
21 qualified
22 academic
23 approximately
24 information
25 disagree
26 speech
27 mountainous
28 admiration
29 arrival
30 countryside
31 disappointing
32 growth
33 southern
34 improvement
35 heavily
36 scientist
37 unpolluted
38 economical: tiết kiệm
39 extremely
40 natural
41 consumption
42 heated
43 memorize
44 homeless (make + adj: bị cái j)
45 trustful
46 humor
47 considerably
48 proud
49 visitors
50 hero