Some hard working students always keep a torch in their dormitories _____ there is a power failure．
| A．if | B．unless |
| C．so that | D．in case |
.Wisky and soda ______ his favorite drink.
| A．is | B．are | C．were | D．have been |
. ______ is to attend our evening.
| A．both the singer and the dancer | B．Either the singer or dancers |
| C．The singer or dancers | D．The singer and dancer |
.The Smiths ______ their breakfast when the morning post came.
| A．had | B．has been having | C．are having | D．were having |
.No one except two students ______ the meeting.
| A．has been late for | B．have been late for | C．was late for | D．were later for |
.All but him and me ______ to the exhibition.
| A．am going | B．is going | C．are going | D．was going |