11. Jane accidentally________where she had hidden the birthday present for her mother.
| A．turned out | B．let out | C．came out | D．took out |
Our school requires that all students _______ on the campus.
| A．must wear school uniforms | B．wearing school uniforms |
| C．to wear school uniforms | D．wear school uniforms |
At the routine office meeting, the headmaster insisted that the problems _______ paid special attention to.
| A．referred to being | B．referred to be |
| C．refer to being | D．refer to be |
_______ basic first-aid techniques will help you respond quickly to emergencies.
| A．Known | B．Having known |
| C．Knowing | D．Being known |
People develop _______ preference for a particular style of learning at _______ early age and these preferences affect learning.
| A．a; an | B．a; 不填 |
| C．不填; the | D．the; an |
She ________ someone, so I nodded to her and went away.
| A．phoned | B．had phoned |
| C．was phoning | D．has phoned |