____ twice, the postman refused to deliver our letters unless we changed our dog. 
| A．Being bitten | B．Bitten | C．Having bitten | D．To be bitten |
—How was your recent trip to Sichuan?
—I've never had ________ one before.
| A．a pleasant | B．a more pleasant |
| C．a most pleasant | D．the most pleasant |
Isn't ________ rude ________ him to talk to his mother like that?
| A．that; for | B．that; of | C．it; for | D．it; of |
________of the people on the Net ________China's economy is among the strongest in the world.
| A．Four fifth; believes | B．Four fifth; believe |
| C．Four fifths; believe | D．Four fifths; believes |
How much________she looked without her glasses!
| A．well | B．good | C．best | D．better |
“When my husband died five years ago，__________ was difficult to go from ‘we' to ‘me'，”said Joe Kita to us.
| A．I | B．that | C．it | D．which |