“Isn’t it about time you _____ to do morning exercises?” “Yes, it is. Would you like to join us?”
He _____ his engagement just before the wedding.
_____ the English examination I would have gone to the concert last Sunday.
_____ it is a good thing I did not get the post I had applied for, though I must admit that I was disappointed at the time.
If the boy had _____ the dog alone it wouldn't have bitten him.
I must go now. _____, if you want that book I'll bring it next time.