(   ) 5. In a few ______ time, the young trees will become stronger and stronger.

     A. year           B. years          C. year’s      D. years’

(   ) 6. He tied the horse ________ the tree last night, but it is not here now.

     A. to             B, of             C. on        D. in

(   ) 7. The girl _____ green is Green.

     A. on             B. wearing        C. in        D. with