（    ）43．--Is Mr. Smith speaking?

          --This is David．My father _________ Singapore on business.

A．has been to         B．has gone to         C．has been in       D．has come to

（    ）42．There is nothing important in today's newspaper, ________?

      A．isn't there          B．is it             C．isn't it             D．is there

（    ）41．--My cute dog died last weekend．

          --________

A．It doesn't matter.     B．That's nothing.       C．What a pity!        D．Be careful!

（    ）40．My sister doesn't like the food_______ is fried．

      A．who                    B．that             C．when              D．where

（    ）39．My father is very busy every day. He usually _______ a lot of time on his work.

     A．spends            B．costs              C．pays               D．takes

（    ）38．--Would you mind not sitting here?

          --________． Please sit down.

A．Of course                                B．It doesn't matter

      C．Not at all                               D．Never mind

（    ）37．A lot of trees ______, or there will he more pollution.

      A．plant                B．must plant             C．must planted          D．must be planted

（    ）36．All kids are looking forward to _________on Children's Day.

      A．enjoy themselves                      B．enjoying ourselves

C．enjoying themselves                      D．enjoy himself

（    ）35．--_________ will you finish your work? We're waiting for you.

          --I'll make it in a few days.

A．How often         B．How soon           C．How long        D．How much

（    ）34．Could you please _________ noise in class? All of us want to study.

      A．don't make         B．make              C．to make           D．not make