Two nuclear power stations _______ in the past two months in Japan
| A．are damaged | B．have been damaged |
| C．would be damaged | D．are damaging |
31. Einstein didn’t care for money. Once he used a check _____ $1000 as a bookmark and then he lost it.
| A．for | B．of | C．about | D．To |
30. More than 20 years ago he was badly wounded in the anti-Vietnam war. Since then he can only walk _____ an arm-chair .
| A．in | B．on | C．by | D．Over |
29. Can you say _____ certain when he will come here?
| A．at | B．for | C．with | D．In |
28. He is too careful _____ his money; he never buys a drink for us.
| A．to | B．at | C．for | D．With |
27. You should write the first letter of the sentence _____ capital one.
| A．on | B．with | C．in | D．At |