____ 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 |
When_____heleavethehospital?"Iaskedthedoctor.
| A．will | B．shall | C．can | D．may |
Between the two roadsa TV tower called “Skyscraper Tower”.
| A．stands | B．standing | C．which stands | D．stand |
The information he gave us is more important than _____ we got ourselves.
| A．one | B．those | C．that | D．the one |
—Xiao Hua looks unhappy, doesn’t she?----Yes, let’s go and ask______.
A. what wrong is with her B. What wrong was with her
C What is wrong with her D. What was wrong with her.
Allow children the space to express their opinions ________ they are different from your own.
| A．until | B．even if | C．unless | D．before |