The handicrafts, ________ had been made by the students, were sold out soon.
| A．most of which | B．most of what |
| C．most of them | D．most of whom |
His teacher is the only one ______ he can turn when he is in trouble.
| A．in whom | B．to whom | C．for whom | D．from whom |
_____ of their bad habits, the boys switched from being dependent on their parents to _____ for others.
| A．Having rid; sacrificing | B．To rid; sacrifice |
| C．Rid; sacrificing | D．Having been rid; sacrifice |
Happy birthday, Alice! So you have _____ twenty-one already.
| A．become | B．turned | C．grown | D．passed |
The computer was used in teaching. As a result, not only _____, but students became more interested in the lessons.
| A．saved was teachers’ energy |
| B．was teachers’ energy saved |
| C．teachers’ energy was saved |
| D．was saved teachers’ energy |
Teachers have to constantly update their knowledge in order to maintain their professional(专业的)_______.
| A．consequence | B．independence | C．competence | D．intelligence |