Paper money was in＿＿＿use in China when Marco Polo visited the country in＿＿＿thirteenth century．
| A．the；／ | B．the； the | C．／； the | D．／；／ |
A special dance ________ horse dance becomes so hot that many famous people can't help copying that.
| A．to be called | B．called |
| C．calling | D．being called |
—Who is the girl over there?
—Isn't that the secretary you want ________ the article?
| A．to have type | B．her to type |
| C．to have typed | D．her type |
As the immune system weakens, it loses the ability ________ illnesses.
| A．fighting | B．fought |
| C．to fight | D．to be fought |
My mother went to the private school in person ________ that I would be safe there.
| A．confirming | B．having confirmed |
| C．to confirm | D．confirmed |
China is expected to export 1 billion mobile phones this year, ________ by a surge in demand for smartphones worldwide.
| A．drive | B．driving | C．to drive | D．driven |