Students are encouraged to _________ the design competition for robots at the university.
| A．take part | B．operate | C．join to | D．participate in |
__________ this cake, you’ll need 2 eggs, 175 g sugar and 175 g flour.
| A．Having made | B．Make |
| C．To make | D．Making |
No matter how frequently __________, the works of Beethoven still attract people all over the world.
| A．performed | B．performing |
| C．to be performed | D．being performed |
There have been several new events __________ to the program for the 2008 Beijing Olympic Games.
| A．add | B．to add |
| C．adding | D．added |
— There is a story here in the paper about a 110-year-old man.
— My goodness! I can’t imagine __________ that old.
| A．to be | B．to have been |
| C．being | D．having been |
Whenever he was asked why he was late for class, he would answer carelessly, always __________ the same thing.
| A．saying | B．said |
| C．to say | D．having said |