---Sorry, but I can’t visit you tomorrow.
---Come whenever it is to your .
| A．pleasure | B．convenience | C．preference | D．connection |
―The Guangzhou Auto show on November 23 was really wonderful.
―Absolutely! I’m sureelse can match it.
| A．no one | B．none | C．nothing | D．nobody |
Everyone of us has many responsibilities ______us．So we must work hard．
| A．attaching | B．attaching to | C．attatched with | D．attatched to |
The program was so fascinating that the children kept their eyes _____on the screen．
A．to fix B to be fixed C．fixed D．fixing
We must be sure that children in our country should get well ______．
A．educate B educating C．education D．educated
The professor devoted all his life ____the treatment of AIDS．
A to research B．in researching C．to researching D．at researching