18, A
19, C
20, A
21, opening
22, has explored
23, beautiful
24, unhappy
25, historic
26, A
27, C
28, B
29, B
30, D
31, T
32, T
33, F
34, F
35, F
36,
37, My mother has started reading this novel for a week.
38, I think you shouldn't come to his birthday party.
39, Although he was be able to walk to his school, he drove his motorbike.
40, Big Ben is the most famous tower in England.