26.He worked in our university as a football _______ for nearly five years.
A.clerk B.grain C.coach D.couch
27.The _______ in the river has to be rebuilt.
A.court B.cousin C.dam D.damp
28.He designed an experiment in order to _______ his theory.
A.demonstrate B.proof C.defense D.grasp
29.Heavy taxed are _______ on wines imported from the other countries.
A. imposed B.trgistered C.splashed D.thundered
30.I would like to visit you and _______ our friendship but in fact I can not come.
A.rent B.renew C.mouse D.spot
26.C 27.C 28.A 29.A30.B