---You could have walked here.---Yes. A taxi necessaryA.isB.wasC.isn’tD.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
试题答案
D
考查时态.根据上文,你应该不行来这儿.是的,出租车不是必须的.可知下文叙述的是过去该做的动作,故选D