21.--- May I take your order now? --- .
When ________different cultures, we often pay attention only to the differences without noticing the similarities.
No permission has ________for anybody to enter the building.
Having checked the doors were closed, and ________all the lights were off, the boy opened the door to his bedroom
________fashion differs from country to country may reflect the cultural differences from one aspect.
The woman was ________of having beaten her four-year-old daughter. (2011.江苏无锡模拟)