25．He ____________ to study for a math test．

    A．have               B．has                         C．must

24．---____you go to the mall with me this afternoon?

    ---Sure，__________．

    A．Can，I can't     B．Can，I'd love to      C．Are，I'm

23．----I have a toothache．

   -----___________

 A．Oh，really?    B．You should see a dentist．    C．I'm sorry to hear that．

22．The teacher often gives us ___________ advice on our English study．

    A．too                  B．much too         C．too much

21．She is tired．She ___________ go to the party．

    A．must               B．shouldn't         C．don't

20.______some ways，they look different．

    A．On                  B．By                  C．In

19．Which do you like_____ ，basketball or football?

    A．good               B．better                     C．best

18．The ruler in the box is ____ longer than the one on the desk．

    A．very                B．too                  C．much

17．Early to get up and early to go to bed is good___ one's health．

    A．to                   B．for                  C．at

16．He is not healthy ___________ he exercises every day．

    A．although          B．though             C．so