题目
A、have been
B、has been
C、have had
D、are
第2题
Every means _______ been tried to solve the difficult problem.
A.have
B.has
C.is
D.are
第5题
The senator tried every means to protect his () in the political world.
A.image
B.imagine
C.imagination
D.imaginable
第6题
Every means __________since then.
A.has been trying
B.have been trying
C.have been tried
D.has been tried
第8题
A、have tried
B、have been tried
C、has tried
D、has been tried
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