1.A
2.A
3.C
4.D
5.D
6.B
7.B
8.B
9.B
10.D
11.inconvenient
12.active
13.nomination
14.preservation
15.populate
16.destruction
17.is->was
18.preservative->preservation
19.leave->left
20.and->but
21.He has gone for one month but I haven't received any letters from him yet
22.I decide not to move to that house because its neighbourhood is noisy
Part 1.
1.B
2.B
3.D
4.A
5.B
6.C
7.C
8.C
9.A
10.D
11.friendly
12.satisfactory
13.available
14.proud
15.polluting
16.excitedly
17.is->was
18.preservative->preservation
19.Easter is a joyful festival which is celebrated in many countries
20.Although Thuy's grandmother doesn't trust weather forecast,she likes watching them