The chairman thought _____ necessary to invite Professor Smith to speak at the meeting.
| A．that |
| B．it |
| C．this |
| D．him |
—How much farther shall we have to go?
—Another five miles until we reach the mountain_________.
.
| A．at a distance | B．in a distance | C．at distance | D．in the distance |
On yesterday interview, he didn’t make a(n)________
at all; what’s the matter with him?
| A．apology | B．appearance | C．difference | D．change |
I think I was at school, ____I was staying with a friend during the vacation when I heard the news.
| A．even so | B．and then | C．so that | D．or else |
There were two boys in the lab,_____did the experiment successfully.
| A．the clever of whom | B．the cleverer or whom |
| C．the clever of them | D．the more clever of them |
After the new technique was introduced the factory produced ______cars in 1994 as the year before.
| A．as twice many | B．as many twice | C．twice as many | D．twice as |