Visitors ________ not to touch the exhibits.
| A．will request | B．are requested |
| C．are requesting | D．request |
15. ____ ! There is a train coming.
| A．Look out | B．Look around | C．Look forward | D．Look on |
14. Believe it or not, it ____ to me that you are all mistaken about such data.
| A．appears | B．seem | C．seemed | D．Appeared |
13. Don’t worry! I'll _____ his safety.
| A．answer | B．answer for | C．reply to | D．See |
12. The teacher didn't _____ to my questions which were not too difficult for me to think over.
| A．answer | B．tell | C．say | D．Reply |
11. It is _____ that there will be another grand celebration on October 1, 2003 in our city.
| A．announced | B．declared | C．saying | D．Reporting |