The old man has two sons，________is a soldier.
| A．one of whom | B．both of them | C．all of whom | D．both of whom |
________that the government can clear up official corruption，we are________ about the future of our country.
| A．Convinced；optimistic | B．Convincing；optimistic |
| C．Convinced；pessimistic | D．Convincing；pessimistic |
General Secretary，Xi Jinping stressed that cross－strait cooperation would be strengthened________ the two sides could agree to oppose Taiwan independence.
| A．as long as | B．even if | C．unless | D．until |
Little _______ that the region was rich in natural resources about four decades ago.
| A．we did know | B．knew we | C．did we know | D．we knew |
The purpose of a class is to teach you to think creatively and not to follow your teacher_________.
| A．willingly | B．blindly |
| C．carefully | D．closely |
It’ll be another 50 years _________ China is expected to reach the level of a medium developed country.
| A．since | B．before | C．that | D．when |