________，the search engine just gave me some brief introductions rather than the whole content of the book to read.

 The repair work may take us a long time，but          it’s worth trying.

The airline stewardess (空姐) said to passengers on ______ with a beautiful smile, “welcome _________!”

I often thought of my childhood,             I lived on a farm.

–I _______ think it’s a northern university. So many restaurants serve northern food.--That’s because the students here are _______ from the north.