We could see that he was trying to _____ his own responsibility for the delay, instead of accepting his fault.
| A．run over | B．smooth over | C．pass off | D．turn down |
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 |
24．One recent prediction is that within the next 50 years, it ______ possible to link the human brain directly with a computer．
| A．is | B．will be | C．would be | D．Was |