It was midnight _____we reached the station.
| A．that | B．when | C．on which | D．which |
She is late. What _____have happened to her?
A should B must C can D would
.We were all waiting for you .You _____for the seaside by yourself without leaving a message.
| A．mustn’t leave | B．shouldn’t have left | C．couldn’t have left | D．needn’t leave |
----Will Mr. Smith join us in the party ?
----He would, but he _____not . He sometimes likes to stay alone.
A must B can C needD may
The notice ______ “No smoking”. A is told B reads C tells D is read
The doorbell had been ringing for several minutes before it ______.
A answered B had answered C was answering D was answered