In the past few years, __________much improvement in the traffic.
A．there has been B．there has had C．there have been D．there had been
A

試題分析：考查時態(tài)和there be 句型：句意：在過去的幾年中，在交通方面有很多改善。時間狀語是in the past few years和現(xiàn)在完成時連用，還有這句話是there be 句型，謂語和be動詞后面的主語much improvement一致，因為是抽象名詞，所以用has，選A。
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