When Mary saw _____ piles of plastic in the bin, _____ strong sense of responsibility made her stick to her recycling work．
| A．不填；不填 | B．不填; a | C．the ; a | D．the; the |
The BRICS countries have____ to be a source of global economic development and essential to generations.
| A．turned out | B．picked out |
| C．put out | D．taken out |
His best movie was about the life of Gandhi in India, ______ won several Oscar awards.
| A． where | B．who | C．which | D．that |
—Did you hear about the hero who rescued the child from the burning building?
—Yes. What do you think most people ______ if they were in a similar situation?
| A．will do | B．will have done |
| C．would do | D．would have done |
A person , when_________，can often do what is normally beyond his ability.
| A．challenged | B．challenges |
| C．challenging | D．to challenge |
Mark needs to learn Chinese ______ his company is opening a branch in Beijing.
| A．unless | B．until | C．although | D．since |