_____many times, they succeeded _________ the experiment.
| A．Having tried; in doing | B．Tried; in being done |
| C．Having tried; to do | D．Tried; doing |
. ——I reminded you not to forget the appointment.
—— ______.
| A．So did I | B．So I did | C．So did you | D．So you did |
Not until ____________ to the top of the palace __________ caught.
| A．he got; was he | B．did he get; he was |
| C．he got; he was | D．did he got; was he |
I’m very ________ about expressing my opinions in public in case I may make mistakes.
| A．cautious | B．confused | C．delighted | D．enthusiastic |
The first aidwork________ threeparts，ofwhichsavingthepeople’slivesisthemost
importantOne.
| A．makesupof | B．consistsof | C．is separated from | D．dividesinto |
_____ is known to us all that the 2012 Olympic Games will take place in London．
| A．It | B．Which | C．As | D．What |