You          tillthelightsturnedgreenbeforecrossingthes...

问题详情：

You           till the lights turned green before crossing the street, or you wouldn’t have been hurt by the lorry

       A．should wait                                         B．must have waited

       C．should have waited                              D．must wait

【回答】

知识点：虚拟语气与情态动词

题型：选择题