Haditnotbeenforthehaze（霾）weatherphenomenon,there      ...

問題詳情：

 Had it not been for the haze（霾）weather phenomenon, there         fewer car accidents in Beijing then．

       A．would have been                B．were

       C．may be                        D．would be

【回答】

A

知識點：虛擬語氣與情態動詞

題型：選擇題