--- Could I use your dictionary?
--- ________________.
| A．Go ahead, help yourself, please | B．Yes, you could |
| C．With pleasure | D．It doesn’t matter |
Natural disasters occur at ________ times, so it is always difficult to warn people in advance.
| A．random | B．exact | C．flexible | D．absolute |
________ when your ticket has been checked will you be allowed to take the plane.
| A．Just | B．Only | C．Still | D．Yet |
Sometimes we can see more than 60 students are ________ in a small school bus, which can easily cause traffic accidents.
| A．packed | B．combined | C．directed | D．involved |
— I heard the voices, but couldn’t ________ what they were saying.
— Why not go over? It won’t do you any harm.
| A．leave out | B．bring out | C．hold out | D．make out |
Who ________ a lady like Susan Boyle, once an ordinary woman in Scotland, would achieve overnight success at Britain’s Got Talent Show?
| A．might think | B．could think |
| C．could have thought | D．must have thought |