1 H	24 C
2 E	23 B
3 G	25 A
4 C	26 B
5 B	27 A
6 F	28 C
7 T	29 D
8 F	30 D
9 F	31 B
10 T	32 D
11 B	33 began
12 B	34 were flying
13 D	35 carrying
14 A	36 could
15 D	37 author's
16 G	38 was released
17 D	39 have been published
18 B	40 more
19 F	41 are/were
20 H	42 experienced
21 A	43 remains/remained
22 A	44 be solved