.He suddenly saw what looked like a snake in the darkness. For an instant his heart seemed to stop ______.
It is politely requested by the hotel manager that radios __________ after 11 o'clock at night.
-Do you know the great changes happening in the village?-No, it's the first time I __________ here.
Here is so heavy a stone that no man can __________ it up.
An artist who was recently traveling on a ferry to the southern island discovered __________ a long lost antique Greek vase.
If we leave right away,__________ we'll arrive on time.