With more forests being destroyed, huge quantities of good earth ______ each year.
| A．is washing away | B．is being washed away |
| C．are washing away | D．are being washed away |
Since 1 won the big prize，my telephone hasn’t stopped ringing. People____to ask how I am going to spend the money.
| A．phone | B．will phone |
| C．were phoning | D．are phoning |
一Have you handed in your schoolwork yet?
一Yes,I have.I guess it _____ now.
| A．has graded | B．is graded |
| C．is being graded | D．is grading |
Although the causes of cancer ____we do not yet have any practical way to prevent it.
| A．are being uncovered | B．have been uncovering |
| C．are uncovering | D．have uncovered |
7.Although the causes of cancer ____， we do not yet have any practical way to prevent it.
| A．are being uncovered | B．have been uncovering |
| C．are uncovering | D．have uncovered |
6.I have to go to work by taxi because my car ____at the garage.
| A．will be repaired | B．is repaired |
| C．is being repaired | D．has been repaired |
5.―Have you handed in your schoolwork yet?
―Yes，I have. I guess it ____ now.
| A．has graded | B．is graded | C．is being graded | D．is grading |
8.Customers are asked to make sure that they ____ the right change before leaving the shop.
| A．will give | B．have been given |
| C．have given | D．will be given |
7.Although the causes of cancer ____， we do not yet have any practical way to prevent it.
| A．are being uncovered | B．have been uncovering |
| C．are uncovering | D．have uncovered |
6.I have to go to work by taxi because my car ____at the garage.
| A．will be repaired | B．is repaired |
| C．is being repaired | D．has been repaired |
5.---Have you handed in your schoolwork yet?
---Yes，I have. I guess it ____ now.
| A．has graded | B．is graded | C．is being graded | D．is grading |
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