— Show me your permit, please.
—Oh, it's not in my pocket. It
| A．might fall out | B．could fall out |
| C．should have fallen out | D．must have fallen out |
When you talk about a person’s _____, you are referring to the country, race, or social class of their parents or ancestors.
| A．origin | B．nationality | C．generation | D．relation |
In ____ accident _____ knowledge of first aid can make _____ real difference.
| A．an; a; a | B．the; a; the | C．an; the; 不填 | D．a; a; 不填 |
In order to continue to live well when we leave school, we must _______ learn some useful skills as well as study in the school.
| A．in all | B．above all | C．after all | D．at all |
In recent years, laws have been passed to stop wild animals from _______.
| A．killing | B．to be killed | C．being killed | D．having killed |
To their great _______, they found their son arrived home safe before the storm.
| A．surprise | B．relief | C．amazement | D．disappointment |