--You look upset. What’s the matter?
---I had my proposal ___________ again.
| A．turned over | B．turned on | C．turned off | D．turned down |
29．—How did he break his head while swimming?
—______ my warnings, he dived straight into the shallow water．
| A．To ignore | B．Ignored | C．Ignoring | D．Being ignored |
28．You ______ very fast if you went from New York to Boston in six hours．
| A．should drive | B．would have driven |
| C．may drive | D．must have driven |
27．—Do you know when Phil's coming?
—He ______ 4: 00．
| A．says | B．has said | C．had said | D．Said |
26．Even if there is no scientific proof yet ______ secondhand smoke causes cancer, there is no reason why nonsmokers should be forced to take this risk．
| A．which | B．that | C．when | D．Where |
25．With so little time ______ on math, it is all too easy for children to ignore practicing mathematics, which is a kind of language．
| A．spent | B．being spent | C．to spend | D．was spent |