---How often the Olympics ? ---Every four years. A．is, taken placeB．is, hol——青夏教育精英家教网——

---How often ___________ the Olympics _____________?
---Every four years.

A．is, taken place

D．does, take place

--- How long have they ______ France? --- For about half a year.

--- Where is your uncle?
--- He ______ to London. He ______ for over three months.

A．has been, has left	B．has gone, has been away
C．has gone, has gone	D．has gone, has left

Great changes ______ in the city and a lot of buildings ______.

A．have taken place, have been set up

B．have been taken place, have been set up

C．were taken place, were set up

D．have taken place, set up

－Why does the river smell terrible? －Because the water_______.

A．was polluted

B．has been polluted

C．will be polluted

D．has polluted

The meeting _ by the time I got there yesterday.

B．has been on

---Can your father drive?
---Yes, and he to work every day.

---Why won’t you go to the movie with me, Gina?
---Because I it twice.

—Sally and Rose _______about the TV show yesterday.
—Let’s join them quickly.
A. talk. B. talked C. are talking

—I hear that a new park _______in the center of the city by 2012.
—That’s great
A. will build B. will be built C. was built

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