Tom’s little sister is a girl of great _______. She takes an interest in everything.
| A．ambition | B．caution | C．curiosity | D．strength |
It was not until the 18th century that man realized that the whole of the brain was involved in the working of the mind， ？
| A．was it | B．wasn’t it | C．did they | D．didn’t they |
The door burst open and ， shouting with anger.
| A．rushed in a crowd | B．in a crowd rushed |
| C．a crowd in rushed | D．in rushed a crowd |
There is a real possibility that these animals could be frightened， a sudden loud noise.
| A．being there | B．there having been |
| C．there was | D．should there be |
If any employee is found information regarding applicants and staff， he or she will be fired immediately.
| A．having leaked | B．leaked | C．leaking | D．to be leaking |
The infrastructure of a country is makes everything run smoothly， including things like transport， irrigation， electricity， postal service， telephones and schools.
| A．that | B．what | C．which | D．as |