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 |
Kathy ______ a lot of Spanish by playing with the native boys and girls.
| A．picked up | B．took up | C．made up | D．turned up |
It rained heavily in Hainan province recently , _____serious flooding in 16 cities and towns.
| A．caused | B．having caused | C．causing | D．to cause |
On seeing me, he turned over and pretended _____ around in the street.
| A．to be wandered | B．to wander | C．wandering | D．to be wandering |
_____ recent survey shows that the number of Non-English speaking families in US is on ____ increase this year .
| A．The, the | B．A, an | C．A, the | D．The, an |
--Look! There is a long queue waiting for the bus. Shall we take a taxi?
--_______. It will save us a lot of time.
| A．I didn’t get it. | B．I couldn’t agree. | C．So what? | D．That’s a good point. |