Whether the buildings in this area should be pulled down has remained ________; people are still looking for other possible solutions.
| A．unchallenged |
| B．relevant |
| C．controversial |
| D．contradictory |
It was not until 1920 ____ regular radio broadcast began.
| A．while | B．which | C．that | D．since |
It was about 600 years ago ____ the first clock with a face and an hour hand was made.
| A．that | B．until | C．before | D．when |
____ is a fact that English is being accepted as an international language.
| A．There | B．This | C．That | D．It |
If you go to Xi’an, you’ll find the palaces there more magnificent than commonly ____.
| A．supposing | B．suppose | C．to suppose | D．supposed |
I don’t like ____ you speak to her.
| A．the way | B．the way in that | C．the way which | D．the way of which |