As all school children know, there are 60 seconds in a minute. But every so often, our planet EARNS/GAINS/WINS/OBTAINS a second.

Being completely honest about your opinions isn't always advisable./IDEA// It isn't . . . completely honest about your opinions.

The rules are EXACTLY/RATHER/THEREBY/SOMEWHAT straightforward: bring a book and lose yourself in it the way you did as a child.

HISTORY, there have been long periods when one might barely detect a single change in pronunciation.

Tom and Alexis said "We're getting married in May." //ANNOUNCED// Tom and Alexis . . . in May.

As a young man he started an engineering APPRENTICE.

All these features add to our view of the owl as being MYSTERY.

It's 7pm and I'm sitting in a café I've never been in before. It's CRAMMED/CRUSHED/MASSED/PILED with people, but nobody's talking.

As it's also a good guide to people's innermost THINK, learning how to "read" these would be a valuable life skill.

But this chance discovery of useful materials _____ undergoing a change.

Last night, I foolishly left my apartment without a key and couldn't get back in. //LOCK// Last night, I was foolish enough . . . my apartment.

Some countries are in favor of abolishing leap seconds while others ARGUE/DISAGREE/DISPUTE/QUESTION that the technical challenges are manageable.