Mrs. Black doesnt believe that her son is able to design a digital camera, ______?
| A．does she | B．isnt he |
| C．doesnt she | D．is he |
Of the two brothers, Bill is ______ younger one, and he is a quiet boy, ______ that most adults like very much.
| A．a; one | B．a ; the one | C．the; one | D．the ; the one |
Lots of waste has been dumped into the river，which has led to________.
| A．lots of fish having been killed | B．kill lots of fish |
| C．lots of fish being killed | D．lots of fish to kill |
There was a________ look on his face when he met with the________ problem.
| A．confusing；confusing | B．confused；confused |
| C．confusing；confused | D．confused；confusing |
You’d better go there by train. The train ticket is________ the airplane ticket.
| A．as cheap three times as | B．as three times cheap as |
| C．three times cheaper than | D．cheaper three times than |
—Shall I give you a ride as you live so far away?
—Thank you，________.
| A．it couldn’t be better | B．of course you can |
| C．if you like | D．it’s up to you |