In communication, a smile is usually _____ strong sign of a friendly and _____ open attitude.
| A．the; / | B．a; an | C．a; / | D．the; an |
The teacher said ____ Tom was an honest boy and ____ he will be our monitor.
| A．that; / | B．whether; / |
| C．/; that | D．/; whether |
It was thought to be ______ adventure for him to walk across ______ Sahara Desert alone.
| A．an; the | B．the, / |
| C．/; the | D．an; a |
The teacher was worried about the boys in her class, for they spent ______ time playing computer games.
| A．large amount of | B．a large number of |
| C．a large amount of | D．large numbers of |
Luckily, there is a hospital ____ and they soon took the wounded man there.
| A．nearly | B．beyond | C．nearby | D．away |
My son ____ the examination, but he wasn't careful enough.
| A．might be able to pass | B．must have passed |
| C．could have passed | D．were able to pass |