1)Look,_____dirty the water is!yes,we should really take action to deal with it.
A.what a B.what C.how D.how a
2)During the past two years ,several earthquakes ______in different places of the world.
A.happen B.happened C.took place D.take place
3)His flight to New York will ______from Shanghai International Airport in two hours.
A.take off B.take up C.take away D.turn off