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The pair of shoes ____ worn out. A. was B. were C. have been D. had been
The pair of shoes __________ worn out.
A．was B．were C．have been D．had been
The pair of shoes worn out.
A．was
B．were
C．have been
D．had been
The pair of shoes________ worn out．
[ ]
A. was B. were C. have been D. had been