—I regret____ to tell ____you that John has been fired.—I can hardly believe my ears. He is such a fine worker.

With tags(标签) _____ to the luggage, it won’t take long for the passengers to find theirs correctly..

A new way of teaching _____ in the article can make learning easier.

 In this park , sparrows often fly down from trees to eat from visitors’hands. They are used to         in this way .

 She wanted to be independent of her parents. She tried ____ alone, but she didn’t like it and moved back home.