What happened in London a few months ago		6
Notices and maps in railway and underground stations told people where to go and ______ in the emergency.		7
How many people were killed in the floods in 1953 on the eastern edge of the London suburbs		8
______ was built to fight against the floods in London in the 1960s.		9
Most Londoners took this thing calmly or nervously		10

A. It is uncomfortable to sit on.
B. It is too cheap to be of high quality.
C. The style of the sofa is out of date.
D. It doesn’t worth the money.

A. Because they are usually adopted from distant places.
B. Because their birth information is usually kept secret.
C. Because their birth parents often try to conceal their birth information.
D. Because their adoptive parents don’t want them to know their birth parents.