If someone has an accident and can no longer walk, scientists might be able to use stem cells to ___ the damaged cells and allow that person to walk again.
| A．rescue | B．remove | C．reserve | D．replace |
most kids still love burgers，chicken wings and pizza，there are a lots of other foodsthat are to kids' taste．
| A．While | B．Since |
| C．Before | D．In case |
Ancient China was a country culture influenced other countries in Asia for centuries．
| A．who | B．which |
| C．whose | D．Where |
一Julia，you look upset．What's up？
…The computer break down at this busy hour．I have lots of typing to do．
| A．should | B．can |
| C．may | D．must |
As the job-hunting season is on the way，many graduates from anxiety．
| A．will be suffered | B．are suffering |
| C．were suffering | D．are being suffered |
I am sorry he has not told me his name on the phone because helps if I know who I am talking to．
| A．it | B．he |
| C．one | D．its |