Now then, children, Its time you ________.

We have done things we ought not to have done and ______ undone things we ought to have done.

The boy said ________ couldn't he work out the problem but his teacher didn't know how to do it.

I've just seen no more than one copy of" Gone with the Wind"in the bookshop opposite. Tom, go and buy______ back.

— Have you read this book?    — Yes. But that one is ________ worth reading.

— The young man is good at a lot of things but you can't say he is ________ .

— I agree with you. Actually no one is.

.— May I have a talk with one of your sports reporters?

— Sorry, but all of them are out to ________ the main events of the day.

.Fifty years ago, wealthy people liked hunting wild animals for fun ________ sightseeing.

.— Would you lend me ________ paper to write ________ paper?  — Sorry, I haven't any.

The rainy season is coming and let's make full use of the ________ days to dry whatever is needed to dry before the next dry season.