1 . The item you requested yesterday is no longer a________and therefore we are returning the money you had paid in advance.（根据首字母单词拼写）

2 . In the 1940s, electricity was __________ to people in almost all areas.

A．typical

B．regular

C．available

D．ideal

3 . Tickets are a__________(able to be bought or got) from the box office.