I know it’s normal for such a thing to happen，but we________it if we’d been more careful.
| A．need have avoided | B．could have avoided |
| C．will have avoided | D．had avoided |
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 |
----_____has been designed to enable children and young people to act safely on roads?
----Programmes and resources in the theme “Road Safety”.
| A．Why is it that | B．What is it that | C．What is that | D．Is it what |
The problem with being a time waster is _____the online game playing often spills over into the periods of time that should be productive.
| A．what | B．which | C．that | D．whether |
The Internet is increasingly accessible at school and at home. _____many parents and teachers are sometimes not as prepared as we should be to warn children about Internet threats.
| A．Actually | B．Generally | C．Surprisingly | D．Unfortunately |
People of different countries and regions, different nationalities and cultures have formed with solidarity an Olympic family, ______they have deepened understanding and enhanced friendship.
| A．when | B．which | C．that | D．in which |