I haven’t seen you since you came back from holiday. ________ a nice time?
In order to get the exact result, the scientists made _______.
It is well known that Thomas Edison _______ the electric lamp.
One of the provinces _______ the union and formed a new country.
In washing this cloth, be sure to _______ the temperature of water.
.The terrible flood swallowed the village ________ the villagers could get away. No one survived it.