A local radio station said that several eruptions _____ in the past twenty years.
| A．had been taken place | B．took place |
| C．have taken place | D．had taken place |
To turn off my cell phone before going to bed seems to be a rule .
| A．to never break | B．never to have broken |
| C．never to be broken | D．never to be breaking |
—Did you have any trouble in getting here ?
— No . I would have telephoned you .
| A．However | B．Otherwise | C．Therefore | D．Anyway |
There were so many cars held up by the heavy rain on the road that we had no but to wait.
| A．alternative | B．difference | C．relation | D．opposition |
that we can’t get the necessary equipment , we will have to give up the experiment.
| A．If | B．Supposed | C．Provide | D．Assuming |
_____professional development, big cities appeal to many young people ．
| A．In favour of | B．In terms of |
| C．In need of | D．In honour of |