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

What do you think of the service of this hotel? — Excellent! They do their best to ______ the guests’ needs.

Peace and development are not only the goals of China, but also the most meaningful direction _____ the whole world should take

It was not just the size of the party last night _______ made it unique, but ________ it meant to our school

__ the opportunity provided by Professor Lee, Charlie finally went to China to study.