The cells of humans, especially _____of the brain, can live only minutes without circulating blood.
| A．that | B．ones | C．it | D．those |
The southern part of Ireland was unwilling andto form its own government.
| A．broke out | B．broke up | C．broke away | D．broke off |
Neither I nor Jane and Marytired of having one examination after another.
| A．is | B．are | C．am | D．be |
you talk to someone or write a message，you show your skills to others.
| A．At times | B．Some time | C．Every time | D．The time |
It seemed that the water.
| A．was to blame | B．was to be blamed | C．should blame | D．was blamed |
He became inspired when he thought about helping ordinary peopleto cholera.
| A．expose | B．exposed | C．exposing | D．to expose |