My uncle _____ to see me. He’ll be here soon.
Is this school _____ you visited last year?
The Great wall is the only one of the buildings on the earth_____ seen from the moon.
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.