My daughter is going through an important stage ______ she must learn to live independently(独立的) in her life.
A．where B．which C．what D．when
The computer was invented in the 1940’s and ______ quite a lot ever since.
A．was changed B．had changed
C．has been changed D．will change
Could I speak to the person who is ______ International Sales, please?
A．in charge of B．in the charge of C．in memory of D．in search of
— This second-hand table cost me only $10.
— It was a real ______. Where did you buy it?
A．trade B．business C．bargain D．price
His second book nearly comes to an end and it’s said that it ______ in two months.
A．will publish B．will be published
C．has published D．has been published
The Burj Khalifa in Dubai is 828 meters high and there is no doubt it’s the tallest building in the world.
A．that B．what C．whether D．which
