As the young people in Nanning, we ought to do everything we can ________ our city more beautiful from now on.
Is there anything ________ I can do for you?
This is the first American film _______ I have ever seen.
Guilin is a city _______ has a history of more than 2,000 years.
One million people of the city, ______ thought little of the event, were asleep as usual that night.
The girl ________ I met in the street yesterday is Mary