Food prices increased ________ 10% in less than a year.
| A．for | B．to |
| C．by | D．at |
_______ is known to us all is that the theme of Shanghai World Expo is “Better City, Better Life”.
| A．It | B．That | C．Which | D．What |
Large amounts of money _______ spent on the bridge, which ________ to be completed the next month.
| A．were; was expected | B．was; was expected |
| C．was; expected | D．were; expected |
He pretended not to care but that remark _________ his real opinion on the matter.
| A．put away | B．put out | C．gave away | D．gave out |
_______ his return from America, he got down to his research.
| A．While | B．In | C．As | D．On |
__________, they couldn’t make her change her mind.
| A．Hard as they tried |
| B．Tried hard as they |
| C．As they tried hard |
| D．They tried as hard |