is known to us all is that the 2008 Olympic Games will take place in Beijing.

He paid for a seat, when he _____ have entered free. [ ]

Excuse me，would you mind answering a few questions—Well，I don’t know. I’m in rather a hurry__________.

Shall we take Linda to the Summer Palace — _________.

I’m worn out, ________， the bike doesn’t work well, so I can’t go farther-Then, we’d better have a rest here[ ]