— ______you write so well?
—By reading and keeping diaries every day.
| A．How is it | B．What is it |
| C．How is it that | D．What is it that |
Since to the world, the dance “Gangnam Style” has gained greart great popularity.
| A．introduced | B．introducing |
| C．being introduced | D．to be introduced |
The boss exploded with anger and asked him to leave in no time;,he was fired
| A．on the contrary | B．on the whole | C．in other words | D．in return |
The Spring Festival Gala（春晚）of 2013 theme was Happy Chinese New Year attracted a large audience
| A．whose | B．which | C．that | D．what |
Many cities issued a warning of air pollution for PM-2.5 readings, which became
Concern of all the people
| A．the; the | B．the;/ | C．/;a | D．an;a |
______ many times, my elderly mother still can’t remember how to light the gas.
| A．Had told | B．Having told | C．Having been told | D．Being told |