You can only be sure of_____you have at present;you cannot be sure of something_____you might get in the future.()
We are living in an age ______ many things are done on computer.
I told them not everybody could do it , _________?
Max could smell the rain coming. And it did. Suddenly the lightning flashed through the clouds, nearly__________him.
It was____the old worker came that we____the experiment.
-What do you think of the speech given by the president? -I like_________of what he said.