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21£®—Could I use your bike?

—____.

A£®Yes, you could use it                         B£®why, of course  

C£®No, you couldn’t                               D£®My bike?

22£®As we all know, Huanghe is ____river.

       A£®Chin’s second longest                      B£®the china’s second longest

       C£®the second china’s longest                 D£®china’s the second longest