______ twice, the postman refused to deliver our letters unless we chained our dog.
| A．Being bitten | B．Bitten | C．Having bitten | D．To be bitten |
Gerneally speaking, it is difficult to breathe at a high of Tibet (西藏).
| A．altitude | B．attitude | C．length | D．width |
When I was tired of my work, I wouldmy belongings and go on a short trip.
| A．use up | B．make up | C．give up | D．pack up |
Mary was given a huge pay rise as a for her great efforts in improving sales.
| A．reward | B．result | C．price | D．title |
—How will I ____ you at the airport?
—Well, I'm wearing a hat and I've got a big black umbrella with me.
| A．recognize | B．glance | C．know | D．realize |
Nick is looking for another job because he feels that nothing he does ________ his boss.
| A．satisfies | B．admires | C．obeys | D．supports |