--It is a long time ______ I saw you last year. --Yes. And it will be some time ______ we see each other again.
It has been five days since the three boys disappeared in the flood, so the chances are slight _____ they will be found alive.
When I was young, I always went to the cinema on weekends and _____ sit there happily for hours.
---The president has expressed you shall be promoted after you complete the challenging project.---But I am afraid his promise is nothing _____ he has carried it out.
A situation often appears where we know what a word means and how to read it but it has _____ our minds when we want to write it down.
---What a prosperous city your hometown is!---Yes. _____ used to be a small village many years ago has developed into a modern city.