—It is rather cold here. Shall we light a fire? —No, we ______because things are easy to catch fire.
Three days later, word came _______ our country had sent up another man-made satellite.
________ breaks the law should be punished.
During the war lots of families _______ and a large number of people became homeless.
Press this button when the light goes on – you’ll soon get the hang of it.
-- I’d like to invite you to a concert this evening.-- Thank you, but _______ I’ll be free I’m not sure at the moment.