By now, more than 100 photos ________ back to the earth by Chang’e-3.
| A．had been sent | B．has been sent | C．have been sent | D．will be sent |
— Have you ever visited the Opera House?
—Yes．When I was in Sydney, I ______ it twice．
| A．have visited | B．visited | C．had visited | D．would visit |
The man had expected to see all his relatives when in hospital, but _________ came to see him while many of his friends offered him their help.
| A．none | B．no one | C．someone | D．anyone |
_________that developed countries want to limit the development of the developing countries in the climate conference in Copenhagen.
| A．It is no possibility | B．It is no need |
| C．There is no denying | D．There is no chance |
That car accident _________all his life. After that he was limited to a wheelchair.
| A．damaged | B．destroyed | C．harmed | D．ruined |
Barack Obama, who came into _________ power on January 20, 2009, was awarded _________2009 Nobel Peace Prize.
| A．the; the | B．the; / | C．/; the | D．/; / |