Hospital staff burst into cheers after doctors completed a 20-hour operation to have _______one-year-old twins at the head.
Whenever you are to walk on the ice,__________ that it is solid and safe enough.
It is a __________ that you missed such a wonderful concert.
Because of the snow,many parts of the countryside are only _________ by helicopter.
I tried hard to get some information about the new technology out of his mouth,but he remained __________.
It is reported that heatrelated deaths are __________ due to brain damage.