People have always been________about exactly how life on earth began.
| A．curious | B．excited |
| C．anxious | D．careful |
The tragedy of the innocent young Brazilian boy killed by the British police has put the British police in a difficult________.
| A．occasion | B．case | C．situation | D．background |
The church has______ quite a few changes over the years.
| A．watched | B．witnessed | C．viewed | D．observed |
At the______ of the century, Shanghai is developing at a rapid speed.
| A．turn | B．change | C．age | D．time |
—Excuse me, may I ask you some questions?
---Sorry, I’m too busy and haven’t even a minute to________.
| A．spend | B．spare | C．share | D．stop |
The computer was one of the greatest______ in the 20th century.
| A．inventions | B．discoveries | C．findings | D．explorations |