1a
2b
3b
4c
5d
6 have been
7 is held
8 to turn
9 plays
10 is raining
11 modernize
12 invention
13 seriously
14 electricity
15 unpolluted(tham khảo c15)
16 a
17b
18d
19b
20c
21a
22b
23c
24c
25b
26 peaceful
27 grow
28 fresh
29 feel
30 villagers
31c
32a
33a
34d
35c
36b
37a
38b(tham khảo c38)
39b
40a(tham khảo c40)
41 .......learned English since 2013
42 .......knew her phone number, I could call her
43 .......has just been sold
44..... the weather was bad, they had a wonderful holiday
45 ........of remaining in office
46 My brother is keen on playing the guitar in his spare time
47 Mr. Cuong suggested that we go for a walk that night
48 Nam was looking through a magazine in the doctor's office when I came
49 We had no difficulty getting tickets for the concert
50 The success of our local has put our city on the map(tham khảo c50)
