The greatest love in the world is no doubt the love of a mother; it can be _____ by nothing else.
| A．charged | B．replaced | C．competed | D．doubted |
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 |
We should be able to do the job for you quickly， you give us all the necessary information.
| A．in case | B．provided that | C．or else | D．as if |