— I’m terribly sorry to keep you waiting for so long．
— _______．
| A．Never mind． | B．That’s right． | C．You are welcome． | D．Don’t mention it． |
is well-known, China is a country.
| A．It; developing | B．As, developed | C．That; developing | D．As; developing |
Many people put down their own jobs and joined usa missing child.
| A．to search | B．in searching | C．in search of | D．to search of |
the history of China, the history of the Untied States is quite short.
| A．To compare with | B．Comparing to |
| C．Comparing with | D．Compared to |
His great contributionsthe development of a modern China will never be forgotten.
| A．by | B．to | C．for | D．with |
He isvery man to whom you can turn forwhen you have difficulty.
| A．the; help | B．the; the help | C．a; a help | D．/; help |