The girls in the photograph are twins, is my classmate in high school.
| A．the taller of them. | B．the taller of whom. |
| C．the tallest of that | D．the tallest of who |
As a recent survey states, people can hardly enjoy a clear blue sky because of the high level of PM 2.5.
| A．in trouble | B．on purpose | C．as usual | D．in ruins |
It is insisted that the One-China should be the basis for the development of relations between the mainland and Taiwan.
| A．identity | B．principle | C．schedule | D．stage |
Jerry and Lily the Internet to find out the shortest way to Xitang, an ancient town in China.
| A．turned to | B．gave in | C．dreamt about | D．set down |
a student is found cheating in the exam, he will not escape from being punished.
| A．While | B．Though | C．Until | D．Once |
The TV program Dad, where are we going?, five dads and their kids take a journey in different places, becomes hot in China.
| A．when | B．where | C．which | D．that |