People in Nome all had diphtheria, a disease that spreads very fast. If ________, it would produce a powerful poison that would kill the patient.
| A．untreating | B．to untreat | C．untreated | D．untreat |
—————Good evening. Huangshan Hotel.
—————Good evening. ______________?
| A．Do you still have a room for tonight | B．What would you like， please |
| C．Is there anything I can do for you | D．Who is that speaking， please |
—What fruit is in season now?
—Grapes and peaches， ______.
| A．I know | B．I think | C．I see | D．I feel |
The pilot got over all the difficulties, _______ the plane safe and sound, for which he was highly spoken of.
| A．to land | B．landing |
| C．landed | D．land |
The bike needs _______, I am afraid.
| A．repairing | B．to repair |
| C．repair | D．be repaired |
______ to somebody, a British person often shakes hands with the stranger.
| A．Introducing |
| B．To introduce |
| C．To be introduced |
| D．On being introduced |