摘要：---You could have walked here. ---Yes.A taxi necessary. A.is B.was C.isn’t D.wasn’t
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---You could have walked here.
---Yes. A taxi ___________ necessary.
A. is B. was C. isn’t D. wasn’t
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— You could have walked here.
— Yes. A taxi ______ necessary.
— Yes. A taxi ______ necessary.
[ ]
A. is
B. was
C. isn't
D. wasn't
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B. was
C. isn't
D. wasn't