—Would you like to join me for a quick lunch before class?—________,but I promised Nancy to go out with her.
I’m lucky _______ the thing I enjoy doing more is ________ I’ve ended up doing.
The construction of the two new railway lines ________ by now.
These teenagers don’t know much of the world yet; that’s why they are so easily _________ .
Everyone Obama meets seems to be _________ with his pat-on-the-back signature.
__________ the displays of culture and technology, the Shanghai Expo also showcased the spirit of voluntarism.(志愿者精神)