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.

I’d like to do some work for the poor students in our town. I think it will be a meaningful .

We can never be too careful with our work. We must try our best mistakes.

good sports information it is! Where did you find it— I found it on the Internet.

________ the Hong Kong singer’s current popularity, she was largely unknown in the Chinese mainland before the talent show