--When did the World Exposition(世博会) in Shanghai begin?

--The Expo began ________ May 1, 2010.

--Is this kite ________?

--No, it’s mine. It’s made by ________.

--      are the Olympic Games held?

--Every four years.

The_______ you are in the exam, the_______ mistakes you will make.  

Could you tell me_____?

We need friends to ________, or we will feel ________.

Things are ____ on the moon ____ on the earth . 

--Have you found the information about famous people      you can use for the report?

--Not yet. I’ll search some on the Internet.

We don't know if it _______ this weekend. If it _________, we will go on a trip.

--Who’s the little baby in the photo, Susan?

--It’s me. This photo ________ fifteten years ago.