C. It erodes away the material under it until the arch crashes down as well
<u>a quatrain </u><u> </u><u> </u><u> </u><u>is</u><u> </u><u>the</u><u> </u><u>answer</u><u> </u>
(B) The walk around Saxe-Coburg Square
is the key event in story which leads to Holmes' solution of the case.
14 Bandit
7 Carpet
3 Copy
12 Cycle
4 Floor
15 Hermit
2 Idea
11 Lunar
8 Marker
19 Mathematician
18 Mathematics
1 Missed
21 Nonrenewable
10 Pardon
9 Party
20 Renewable
16 Sixty
6 Stars
5 Started
17 Symptom
13 Vomit