After driving for 20 miles，Jackson realized that he _______ in the wrong direction.
| A．was driving | B．drove | C．had been driving | D．had driven |
The construction of the two new railway lines ________ by now.
| A．have been completed | B．has been completed |
| C．has completed | D．have completed |
These teenagers don’t know much of the world yet; that’s why they are so easily _________ .
| A．taken in | B．taken on | C．taken up | D．taken over |
Everyone Obama meets seems to be _________ with his pat-on-the-back signature.
| A．awarded | B．rewarded | C．provided | D．familiar |
__________ the displays of culture and technology, the Shanghai Expo also showcased the spirit of voluntarism.(志愿者精神)
| A．Apart from | B．More than | C．Instead of | D．Other than |
The Shanghai Expo has had a major impact upon China. It is the first World Expo _________ in a developing country in the event’s 159-year history.
| A．having been held | B．to hold | C．being held | D．to be held |