As the immune system weakens, it loses the ability ________ illnesses.
| A．fighting | B．fought |
| C．to fight | D．to be fought |
Please ________ the numbers and I’m sure they will________ more than 1,000.
| A．add; add up | B．add up; add up | C．add up; add up to | D．add to; add up |
— I didn’t want to ask John to help solving the trouble.
— Really? , Tom is eager to do so.
| A．In the end | B．As a matter of fact | C．Frequently | D．Generally speaking |
Was it the third time that sheto this mountain village to see the children?
| A．has come | B．came | C．comes | D．had come |
All the people were shocked by what the little girlwhen she was cheated and sold to the mountain village.
| A．went over | B．went through | C．got along with | D．got away |
Jane, I hear you to China. Have you got everything ready?
| A．have travelled | B．travel | C．are travelling | D．would travel |