The number of people invited ____ fifty, but a number of them ____ absent for different reasons.
| A．were , was | B．was , was | C．was , were | D．were , were |
Nobody can explain the mystery ____ he suddenly disappeared.
| A．why | B．what | C．whether | D．which |
It suddenly___ to me that we could use the computer to do the job.
| A．stroke | B．occurred | C．happened | D．saw |
Though she _______for a moment, she finally went in and asked to see a dress that was in the window.
| A．dared | B．nerved | C．wondered | D．hesitated |
The survey shows that a large number of teenagers are ________ cigarettes nowadays.
| A．devoted to | B．related to | C．connected to | D．addicted to |
Rita _________two hours every Sunday afternoon to spend with her son.
| A．sets out | B．sets away | C．sets aside | D．sets off |