_________ the internet is _________, I do not think it is a good idea to spend too much time on it.
| A．When ; helpful | B．As ; great help |
| C．While ; of great help | D．Now ; of no help |
According to some theories ________ from psychoanalysis, life is supposedly easier; and more pleasant when anxiety is overcome.
| A．obtain | B．obtaining | C．to obtain | D．obtained |
All the ladies wear beautiful clothes for the celebration. Some are dressed in red, _______ in purple.
| A．other | B．another | C．others | D．the other |
Keeping a foreign pet is dangerous, as the owner might be infected ________ the diseases brought along with the animal.
| A．in | B．with | C．by | D．for |
Reading articles like that, if , will do harm to you.
| A．continued | B．continues | C．continuing | D．to continue |
As my dad are getting old, his eye-sight is starting to _______.
| A．lose | B．fall | C．go | D．disappear |