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---Is the Youth Center open to the public yet?
---Yes. It ______ for almost one and a half years.

---Could you_____ me this book please, Daniel？
--- Sorry, but I_____ it for only half an hour. I haven’t finished it.

In fact he knows this place very well, for he ________ there three times.

He _____ in this factory for 20 years already.

— What were you doing when we were playing basketball yesterday afternoon?
— I ______ the classroom.

—What do you often do at weekends?
—I often _________ my grandparents.

— Beibei, is Mr. Chen in the office?
— No. He        for half an hour.
A. left                   
B. has left           
C. has been away

The 2014 FIFA World Cup        in Brazil on June 13.
A. is opening              B. has opened             C. opened

Since Project Hope started，it _______ millions of children to come back to school
A．has helped     B．helped          C．is helping

--Wow! You have a ticket to the Expo!
--lt        - by my uncle.  He is working in Shanghai.