31.D
32.C
33.D
34.C
35.A
36 .B
37. D
38.C
39. C
40. B
1. Does not teach/unteach
2.únold/not sold yet
3..construct
4.cheap/inexpensive,...
5. flood
6.leave
7.disappear
8.imconscious/no sến
9. happy
10.impolluted
11.unconnect
12.interesting/lively,...
13.closed
14.take
15.wake up
16.good, better
17.ancient /antiquated, obsolete, old, old-fashioned, outdated, passe,..
18.small
19.import
20.answered
21.ugly
22.on unione/sporadio
23.unpopular
24. depart
25.success
26. be hate of
