Millions of people watched that first moon landing on television, their hearts in their mouths, aware of how difficult and dangerous an adventure it was, and what risks had to be ____.
| A．taken | B．take | C．to take | D．taking |
1It doesn't matter so much whether he works hard；the question is whether he works ______.
| A．above all | B．in all | C．at all | D．after all |
The secret of success is to be ______ existence，to be always calm，and to let each wave of life wash us a little farther up the shore.
| A．in hope of |
| B．in harmony with |
| C．in need of |
| D．in honor of |
Chinese President Hu Jintao had had ______brief meeting with the three astronauts，who were going to board______country's third manned spacecraft Shenzhou Ⅶ on September 25,2008.
| A．the；a | B．a；a | C．a；the | D．the；the |
As the twentieth century came to a close，the raw materials for a great national literature were at hand，waiting ______.
| A．to use | B．to be used |
| C．to have used | D．to be using |
—What were you doing when I rang you this morning?
—I was occupied ______ the housework and kept my son occupied______ his homework.
| A．at；doing | B．with；doing | C．at；to do | D．with；to do |