Have you ever visited an online bookstore and been (surprise) by the books that the store recommended for you?

Many of the books looked ___________ to you.

So how did the bookstore know _________ you liked? (좋아하는 것)

the amount of data we have ____ getting much greater than before.

the amount of data we have is getting ________ greater than before.

This is mainly because almost everything that we do online ______ a trace.

These results then can be used to (make) decisions or to predict the future.

Big data helps companies ____________ their customers’ needs better.

When the flu season _______, people will buy more flu medicine.

If this kind of data is (analyze) wisely, the spread of the flu can be predicted.