David said that it was because of his strong interest in literature ___ he chose the course.
| A．that | B．what | C．why | D．how |
.What caused the accident ______ on the road.
| A．were stone | B．were stones | C．was stone | D．was stones |
.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 |