He______ and was made to repeat it.
| A．didn'tunderstand | B．didn'tbeunderstood |
| C．wasn'tunderstand | D．wasn'tunderstood |
．What sets human beings apart from animals is not the pursuit of happiness, but the pursuit of meaning, ________ is unique to humans.
| A．that | B．what |
| C．which | D．as |
One theory, ________ suggested by Harvard University, is that humans began cooking their food, thereby releasing nutrients locked in the raw food and reducing the time needed to chew it.
| A．which | B．as |
| C．that | D．what |
________ is shown in the report, teenager problems are often connected with family life education.
| A．Which | B．As |
| C．It | D．What |
They told me they had just arrived at the last destination ________ you went to last year.
| A．where | B．that |
| C．when | D．which |
．Soon children in the camp had many new friends, ________ they shared food, stories, and projects.
| A．for which | B．with whom |
| C．of which | D．to whom |