If better use is ________ your spare time,you’ll make good progress in doing your business.
—What do you think of the book? —Oh , excellent. It’s worth ______a second time.
Little Jim should love _____to the theatre this evening.
The squirrel was lucky that it just missed___________.
Charles Babbage is generally considered______-the first computer.
_________a reply, he decided to write a sixth letter.