Let’s keep to the point or we ___________ any decisions．
| A．will never reach | B．have never reached | C．never reach | D．never reached |
.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
The box _____. Better call in a mechanic(修理工).
A isn’t open B hasn’t been open C isn’t be open D won’t open