．—Did you see who the driver was?
—No, so quickly_________ that I couldn’t get a good look at his face.
A．does the car speed by B．the car sped by
C．did the car speed by D．the car speeds by
We rushed to the football court, only to see a sign _____ into the ground reading PERIODIC MAINTENANCE (定期维修).
A． knocked B． knocking C． to be knocked D． being knocked
．— I don’t think we have met before.
— Yes, once at a party, but we _______.
A．didn’t introduce B．weren’t introduced
C．haven’t introduced D．weren’t introducing
_____ the Hope Project was carried out in this poor area, students here had no access to education.
A．Once B．As C．Before D．After
Tom, turn down the music. Why you make such a big noise while your baby sister is sleeping?
A．must B．would C．should D．may
．It rained for two weeks, completely _______ our holiday.
A．ruined B．ruin C．to ruin D．ruining
