So______that many parents are too worried to let their children travel alone at the beginning of the new term.
| A．is the distance great | B．great the distance is |
| C．the distance is great | D．great is the distance |
Christopher ________ charity work by raising a lot of money to promote medical research.
| A．came to | B．came up with |
| C．pulled through | D．got involved with |
Yang Liwei showed the flags of China and the United Nations, ________ the wishes of Chinese people to use space peacefully.
| A．expressing | B．expressed |
| C．to express | D．express |
-- The last one ________ pays the meal. --- Agreed.
| A．arrived | B．to arrive |
| C．arrives | D．arriving |
She had to leave school_______ her family couldn’t afford her education.
| A．although | B．unless |
| C．because | D．so |
The old man has retired from the factory. He _____ there for 30 years.
| A．works | B．worked |
| C．has worked | D．was working |