Robert is said abroad, but I don’t know in which country he is.
| A．have been studying | B．to have been studying | C．have studied | D．to have studied |
— Why didn’t she ask for help at that time?— You know, at such a midnight, there was no one ________.
| A．she could turn to | B．for whom to turn | C．who to turn to | D．for her to turn |
After Yang Liwei succeeded in circling the earth, Chinese astronauts __________ walk in space.
| A．anxious to do | B．eager for | C．are dying to | D．are longing to |
The man I ______ yesterday in the street is my manager.
| A．paid a visit | B．had a talk | C．met | D．dropped |
Students are encouraged to _________ the design competition for robots at the university.
| A．take part | B．operate | C．join to | D．participate in |
The plan has to be _______ to meet the real situation.
| A．adjusted | B．adapted | C．produced | D．refounded |