Paper-making began in China and from here it ________ to North Africa and Europe.
Only when Tom fully recovered ______ back to work.
----Has Tom already finished his new story? ----I have no idea. He ______ it last month.
You have a big mouth, Tom. You _______ have told everybody the secret.
He’s not got another job yet and it’s not ______ he will for some time.
We will ______ all the natural resources if we continue consuming them like that.