______ flag-raising ceremony was held at the Golden Bauhinia Square on July 1 to celebrate ______ 17th anniversary of Hong Kong’s return to China.
The girl ______ on the ground ______ to me that she had ______ the purse on the desk.
How did it come about that you failed to ______ in time for the meeting yesterday?
______ Mary found her lost pen the day before yesterday?
It is bad ______ to talk with your finger ______ at the other person.
Going on a trip into ______ space must be quite ______ exciting experience.