6.B economic
7.B isn't she
8. B to visit
9.C to lock
10.D because of + cum danh tu
11.A who + V: nói về người
12.C hadn't gone
13.B was
14.A themselves
15.by (learn by heart : học thuộc lòng)
16.B missed
17.B although + mệnh đề
18.A suit
19.at (be good/ bad at sth : giỏi/dở về cái gì)
20.B on
21.C between ->in
22.B to go ->going
23.A rain -> rains
24.C attracts -> attracting
25.C to raise -> raising
26. B orbit
27.A consists
28.A produce
29.C possible
30.D sun
31D the smallest
32B of
33D sky
34D contains
35B are
36. cooked
37. goes (everyday : HTD)
38. are playing (now: HTTD)
39. did/go
40.bring
41.The girl, who lived next door to us ,is very friendy
42. Mr Brown asked me what my name was
43. It is necessary to learn English
44. In spite of his broken leg, ...........
= in spite of the broken leg,.............
45. Unless someone put the coal in, the fire will go out.
