— John has put forward ______ most challenging question for us to answer.
— Yes, it really is. I have never heard ______ harder one.
| A．a; the | B．the; the |
| C．a; a | D．the; a |
“It is not only you but also Tom who _________,” said the teacher after knowing what had happened．
| A．are to be blamed | B．is to be blamed |
| C．are to blame | D．is to blame |
It’s a common sense _________ Canberra, ________ between Sydney and Melbourne, is the capital of Australia．
| A．that; locating | B．that; located | C．which; located | D．as; locates |
The problem of global warming is serious．_________, the sea levels have _________ a little．
| A．As a consequence; risen | B．On the contrary, arisen |
| C．On the other hand; arisen | D．In other words; risen |
— Better get down to your work, Jack．
—_________．
| A．It’s my pleasure | B．Not to mention it |
| C．Mind your own business | D．You’re welcome |
The driver was at _________ loss when _________ word came that he was forbidden to drive for speeding．
| A．a; the | B．/；/ | C．the; the | D．a；/ |