It was quite a serious mistake,____caused by carelessness.
| A．which I think was | B．I think which was |
| C．which I think it was | D．I think which it was |
I’m lucky _______ the thing I enjoy doing more is ________ I’ve ended up doing.
| A．what; what | B．what; that | C．that; what | D．that; that |
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 |